Order SILURIFORMES: Families RITIDAE, AILIIDAE, HORABAGRIDAE and BAGRIDAE

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v. 10.0 – 25 Feb. 2017  view/download PDF

Family RITIDAE
2 genera · 14 species        

Nanobagrus Mo 1991    nanus, dwarf or small, referring to size (up to 45 mm SL); bagrus, a bagrid catfish (originally placed in Bagridae)

Nanobagrus armatus (Vaillant 1902)    armed with a weapon, referring to strong serrations on posterior edge of pectoral spines

Nanobagrus fuscus (Popta 1904)    dark or dusky, referring to brown coloration, sometimes dark brown, on body and fins

Nanobagrus immaculatus Ng 2008    unspotted, referring to dark uniform coloration

Nanobagrus lemniscatus Ng 2010    adorned with ribbons, referring to broad cream bands that frequently encircle body

Nanobagrus nebulosus Ng & Tan 1999    cloudy, referring to cream-colored patches on body

Nanobagrus stellatus Tan & Ng 2000    starred, referring to pattern of cream-colored spots on body

Nanobagrus torquatus Thomson, López, Hadiaty & Page 2008    decorated with a necklace or collar, referring to distinct band around body immediately posterior to head

Rita Bleeker 1853    tautonymous with Pimelodus rita; local Bengali name for this species in India

Rita bakalu Lal, Dwivedi & Singh 2017    vernacular name for this catfish in Telangana and Andhra Pradesh states of Peninsular India, where it occurs

Rita chrysea Day 1877    golden, presumably referring to “yellowish” coloration

Rita gogra (Sykes 1839)    gograh, Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Rita kuturnee (Sykes 1839)    Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Rita macracanthus Ng 2004     macro-, long; acanthus, spine, referring to relatively long dorsal- and pectoral-fin spines

Rita rita (Hamilton 1822)    local Bengali name for this species in India

Rita sacerdotum Anderson 1879    priests, being a sacred fish under royal protection, “daily fed by the priests who reside on the small rocky islet” of Thingadaw, on the Irrawaddy River of Myanmar


Family AILIIDAE Asian Butter Catfishes
7 genera · 25 species                                                              

Ailia Gray 1830    a local name for A. coila (and Ailiichthys punctata) in India

Ailia coila (Hamilton 1822)     etymology not explained, possibly latinization of Kajoli (pronounced “kway-la”), Assamese name for this catfish in Rangbur, Bangladesh

Ailiichthys Day 1872    Ailia, similar to that genus but differing in the lack of ventral fins; ichthys, fish

Ailiichthys punctata Day 1872    spotted, referring to large black spot before base of caudal fin

Clupisoma Swainson 1838    clupea, herring; soma, body, referring to herring-shaped body

Clupisoma bastari Datta & Karmakar 1980    of Bastar District, Madhya Pradesh, India, type locality

Clupisoma garua (Hamilton 1822)    local Bengali name for this catfish in India

Clupisoma longianalis (Huang 1981)    longus, long; analis, anal, referring to longer anal fin compared to C. sinense

Clupisoma montana Hora 1937    mountain, presumably referring to occurrence in mountain streams of the Lesser Himalayas near Darjeeling, India (also occurs in Nepal and Bangladesh)

Clupisoma naziri Mirza & Awan 1973    in honor of “the most eminent ichthyologist of Pakistan,” Nazir Ahmad, Director of Fisheries, West Pakistan

Clupisoma nujiangense Chen, Ferraris & Yang 2005    ensis, suffix denoting place: Nu Jiang (=Salween River), Yunnan Province, China, type locality

Clupisoma prateri Hora 1937    in honor of Stanley Henry Prater (1890-1960), curator, Bombay Natural History Society, for helping Hora procure fresh material of Indian fishes for his studies

Clupisoma roosae Ferraris 2004    in honor of Anna Roos, Swedish Museum of Natural History, who helped collect type

Clupisoma sinense (Huang 1981)    ensis, suffix denoting place: Sinica (China), presumably referring to only country where it was known to occur at the time (also occurs in Cambodia)

Eutropiichthys Bleeker 1862    Eutropius (=Schilbe, Schilbeidae), referring to similarity to that genus; ichthys, fish

Eutropiichthys britzi Ferraris & Vari 2007    in honor of Ralf Britz, Natural History Museum (London), who collected some of the type material, for his many contributions to our knowledge of the fishes of Myanmar

Eutropiichthys burmannicus Day 1877    icus, belonging to: Burma, described as a Burmese variety of E. vacha [note incorrect spelling, with extra “n”]

Eutropiichthys cetosus Ng, Lalramliana, Lalronunga & Lalnuntluanga 2014    whale-like, referring to numerous gill rakers, reminiscent of baleen in baleen whales

Eutropiichthys goongwaree (Sykes 1839)    Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Eutropiichthys murius (Hamilton 1822)    from Muri vacha, local Gangetic name for this catfish

Eutropiichthys salweenensis Ferraris & Vari 2007    ensis, suffix denoting place: Salween River, Thailand, type locality

Eutropiichthys vacha (Hamilton 1822)    local Gangetic name for ailiid catfishes in India, including this one

Laides Jordan 1919    ides, descendant of: replacement name for Lais Bleeker 1858, preoccupied by Lais Gistel 1848 in Tunicata (Lais is Sundanese name for L. hexanema)

Laides hexanema (Bleeker 1852)    hexa-, six; nema, thread, referring to three pairs of fleshy barbels

Laides longibarbis (Fowler 1934)    longus, long; barbis, barbel or beard, referring to long maxillary barbel that reaches just beyond front of anal fin

Proeutropiichthys Hora 1937    pro-, in front of or before, probably referring to Hora’s belief that this genus gave rise to (i.e., came before) Eutropiichthys

Proeutropiichthys buchanani (Valenciennes 1840)    patronym not identified but probably in honor of Francis Hamilton-Buchanan (1762-1829), Scottish physician and naturalist, who published influential account of Indo-Gangetic fishes in 1822

Proeutropiichthys macropthalmos (Blyth 1860)    macro-, large; opthalmos, eye, referring to “remarkably large eyes, that occupy more than half of the height of the head”

Proeutropiichthys taakree (Sykes 1839)    Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Silonia Swainson 1838    etymology not explained, possibly latinization of silon, local name for juveniles of this catfish in Bihar, India, or putative tautonymy with Pimelodus silondia but missing the “d

Silonia childreni (Sykes 1839)   in honor of Swainson’s friend John George Children (1777-1852), keeper of the Natural History Department of the British Museum (Natural History)

Silonia silondia (Hamilton 1822)    latinization of Silond, local name for this catfish in Bihar, India


Family HORABAGRIDAE Sun or Imperial Catfishes
4 genera · 11 species                                                           

Horabagrus Jayaram 1955    Hora, in honor of Sunder Lal Hora (1896-1955), Director, Zoological Survey of India, for kindly suggesting Jayaram’s participation in a symposium (the Palaearctic element in the fish fauna of peninsular India) and his help in the preparation of the article in which this catfish was described; bagrus, a bagrid catfish (originally placed in Bagridae)

Horabagrus brachysoma (Günther 1864)    brachys, short; soma, body, referring to height of body nearly equal to length of head                                                       

Horabagrus nigricollaris Pethiyagoda & Kottelat 1994    niger, black; collaris, neck or collar, referring to dark saddle-shaped mark on nape                                  

Pachypterus Swainson 1838    pachys, thick; pterus, fin, allusion not explained, perhaps referring to “considerably more lengthened” tail and/or long anal fin [often referred to as Neotropius Kulkarni 1952, a junior synonym]

Pachypterus acutirostris (Day 1870)    acutus, short or pointed; rostris, snout, referring to elongated and pointed upper jaw, which extends beyond lower jaw                                  

Pachypterus atherinoides (Bloch 1794)    oides, having the form of: silversides (Atherinidae: Atherina), probably referring to silvery stripe on sides                       

Pachypterus khavalchor (Kulkarni 1952)    local name of Kolhapur, Maharashtra State, India, type locality                    

Platytropius Hora 1937    platy, flat, probably referring to flattened head; tropius, truncation of Eutropius (=Schilbe), a common suffix for schilbeid catfishes (reflecting original familial placement), i.e., a flat Eutropius                   

Platytropius siamensis (Sauvage 1883)    ensis, suffix denoting place: Siam, or Thailand, where it is endemic to the Chao Phraya River basin                                    

Platytropius yunnanensis He, Huang & Li 1995    ensis, suffix denoting place: Yunnan Province, China, where it is endemic                           

Pseudeutropius Bleeker 1862    pseudo-, false, referring to similarity to (and previous placement of P. brachypopterus in) Eutropius (=Schilbe, now in Schilbeidae)                    

Pseudeutropius brachypopterus (Bleeker 1858)    brachys, short; [hy]po-, under or less than; pterus, fin, referring to shorter anal fin compared to Asian and African congeners then placed in Eutropius (=Schilbe, now in Schilbeidae)                        

Pseudeutropius indigens Ng & Vidthayanon 2011    indigent, i.e., to need or want, referring to lower number of anal-fin rays and gill rakers when compared to the similar P. moolenburghae                      

Pseudeutropius mitchelli Günther 1864    in honor of Capt. Jesse Mitchell, British army officer who served as Superintendent of the Government Museum, Madras, who presented type to the British Museum (Natural History)                     

Pseudeutropius moolenburghae Weber & de Beaufort 1913    in honor of Mrs. Moolenburgh (forename not given), who supplied with her husband, P. E. Moolenburgh, a large collection of fishes from Sumatra to the authors, including type of this one


Family BAGRIDAE Naked or Bagrid Catfishes
17 genera · 204 species                                                           

Bagrichthys Bleeker 1857    Bagrus, referring to Bleeker’s original placement of B. hypselopterus in that genus; ichthys, fish                               

Bagrichthys hypselopterus (Bleeker 1852)    hypselo-, high; pterus, fin, referring to long dorsal-fin spine, up to twice as high as the body                          

Bagrichthys macracanthus (Bleeker 1854)    macra-, long; acanthus, spine, referring to dorsal-fin spine, longer than length of head                            

Bagrichthys macropterus (Bleeker 1854)    macro-, large; ptera, fin, referring to long adipose fin, four times longer than dorsal fin                           

Bagrichthys majusculus Ng 2002    somewhat greater, referring to relatively larger adipose-fin base and pectoral and dorsal fins when compared to B. macracanthus, its closest congener                        

Bagrichthys micranodus Roberts 1989    micro-, small, referring to small size (up to 125 mm); an-, without and odus, tooth, referring to “virtually toothless jaws”                                

Bagrichthys obscurus Ng 1999    indistinct, referring to uniform brown coloration            

Bagrichthys vaillantii (Popta 1906)    in honor of Léon Vaillant (1834-1914), Muséum national d’Histoire naturelle (Paris), who described this species in 1902 but used a preoccupied name                         

Bagroides Bleeker 1851    –oides, having the form of: Bagrus, i.e., a bagrid catfish                            

Bagroides melapterus Bleeker 1851    mela[no]-, black; pterus, fin, referring to “violet-black” (translation) coloration on rayed dorsal, pectoral, ventral and anal fins, and “black-violet” (translation) border on caudal fin                   

Bagrus Bosc 1816    latinization of bagre, which, according to Marcgrave (1648), is a Portuguese word for catfish used in Brazil (possibly first applied to the marine ariid Bagre bagre)                                   

Bagrus bajad (Forsskål 1775)    local name for this catfish along the Nile River in Egypt (also spelled bayad)                                    

Bagrus caeruleus Roberts & Stewart 1976    blue, referring to bluish color of back and sides                       

Bagrus degeni Boulenger 1906    in honor of ornithologist Edward Degen (1852-1923), who “utilized his leisure” while serving as an assistant to Prof. E. A. Minchin in Uganda and collected type                     

Bagrus docmak (Forsskål 1775)    local name for this catfish along the Lower Nile river delta, Egypt (also spelled dogmak and docmac)   

Bagrus filamentosus Pellegrin 1924    referring to first branched dorsal-fin ray prolonged into a long filament and succeeding rays into shorter filaments; name may also refer to filaments sometimes present on pectoral fins                                  

Bagrus lubosicus Lönnberg 1924    icus, belonging to: Lubosi River, Democratic Republic of Congo, type locality                             

Bagrus meridionalis Günther 1894    southern, presumably referring to distribution south of the nilotic B. bajad in the upper Shire River of Malawi

Bagrus orientalis Boulenger 1902    eastern, presumably referring to occurrence along the Zanzibar coast of Tanzania in East Africa

Bagrus ubangensis Boulenger 1902    –ensis, suffix denoting place: Ubangi River, Democratic Republic of the Congo, type locality

Bagrus urostigma Vinciguerra 1895    uro-, tail; stigma, mark, referring to black spots on caudal fin

Batasio Blyth 1860    tautonymous with Pimelodus batasio; local Bengali name for this species in India

Batasio affinis Blyth 1860    related, “Exceedingly like” B. buchanani (=B. batasio)

Batasio batasio (Hamilton 1822)    batasio or batashi, local Bengali names for this species in India

Batasio convexirostrum Darshan, Anganthoibi & Vishwanath 2011    convexus, rounded or curving out; rostrum, snout, a character not mentioned in text but clearly seen in photograph

Batasio dayi (Vinciguerra 1890)    in memory of Francis Day (1830-1889), Inspector-General of Fisheries in India and author of “Fishes of India” (1889), an “illustrious naturalist” (translation), for his many valuable contributions to the ichthyology of India

Batasio elongatus Ng 2004    prolonged, referring to relatively slender body and long snout

Batasio fasciolatus Ng 2006    banded, referring to six vertical dark brown bars on head and body

Batasio feruminatus Ng & Kottelat 2008     welded, referring to contact between dorsal and adipose fins, unique in genus

Batasio flavus Plamoottil 2015    yellow, referring to color of body and fins

Batasio fluviatilis (Day 1888)    of a river, presumably referring to type locality, described as a “stream”

Batasio macronotus Ng & Edds 2004    macro-, long; notos, ridge or back, referring to long adipose fin compared to B. batasio

Batasio merianiensis (Chaudhuri 1913)    –ensis, suffix denoting place: presumably a variant spelling of Mariani, referring to Mariani Junction, Assam, India, type locality

Batasio pakistanicus Mirza & Jan 1989    –icus, belonging to: Pakistan, where it is endemic

Batasio procerus Ng 2008    long, referring to elongate caudal peduncle

Batasio sharavatiensis Bhatt & Jayaram 2004    ensis, suffix denoting place: Sharavati River, India, type locality

Batasio spilurus Ng 2006    spilos, spot; ouros, tail, referring to distinct spot at base of caudal peduncle

Batasio tengana (Hamilton 1822)    presumably local Bengali name for this species in India

Batasio tigrinus Ng & Kottelat 2001    tiger-like, referring to striped coloration

Batasio travancoria Hora & Law 1941    ia, belonging to: Travancore, a former Hindu feudal kingdom, now Kerala, India, where this catfish occurs

Chandramara Jayaram 1972    tautonymous with Pimelodus chandramara (see species name)

Chandramara chandramara (Hamilton 1822)    etymology not explained, perhaps derived from Chandragupta Maurya (340-298 BC), founder of the Mauryan Empire and the first emperor to unify India into one state

Coreobagrus Mori 1936    Corea, alternate spelling of Korea, referring to country where C. brevicorpus is endemic, i.e., a Korean bagrid

Coreobagrus brevicorpus Mori 1936    brevis, short; corpus, body, referring to “rather short and compressed” body

Coreobagrus ichikawai Okada & Kubota 1957    in honor of Atsuhiko Ichikawa (1904-1991), Hokkaido University, the junior author’s “venefactor” [sic, benefactor] in college

Hemibagrus Bleeker 1862    hemi-, partial, being a genus resembling, closely related, and/or previously referred to as Bagrus

Hemibagrus baramensis (Regan 1906)    ensis, suffix denoting place: Baram River, Borneo, type locality

Hemibagrus bongan (Popta 1904)    named for the Bongan River, central Borneo, type locality

Hemibagrus capitulum (Popta 1906)    diminutive of capit, head, i.e., little head, probably referring to larger head compared to H. fortis [date often incorrectly given as 1904]

Hemibagrus caveatus Ng, Wirjoatmodjo & Hadiaty 2001    caged, referring to dark vertical and horizontal stripes on sides, which resemble bars of a cage

Hemibagrus centralus Mai 1978     etymology not explained, perhaps referring to type locality, Quảng Bình Province, which is in north-central Viêt Nam

Hemibagrus divaricatus Ng & Kottelat 2013     Latin for spread apart, referring to relatively large distance between dorsal and adipose fins

Hemibagrus filamentus (Fang & Chaux 1949)    referring to filamentous extensions of first 3-4 branched rays of dorsal fin, their total height equal to length of head

Hemibagrus fortis (Popta 1904)    strong, allusion not explained, possibly referring to rugose head shield characteristic of genus

Hemibagrus gracilis Ng & Ng 1995    slender, referring to proportionally more elongate body compared to H. planiceps, its closest congener

Hemibagrus guttatus (Lacepède 1803)    spotted, referring to small blackish spots irregularly scattered on almost all parts of the body

Hemibagrus hainanensis (Tchang 1935)    ensis, suffix denoting place: Hainan Island, China, where it is endemic

Hemibagrus hoevenii (Bleeker 1846)    patronym not identified but almost certinaly in honor of Bleeker’s Dutch colleague, zoologist Jan van der Hoeven (1801-1868), whom he had honored in several other names

Hemibagrus imbrifer Ng & Ferraris 2000    rainy, referring to arrangement of sensory pores in vertical columns on sides of body

Hemibagrus lacustrinus Ng & Kottelat 2013    of a lake, referring to Danau Singkarak, a tectonic lake, and its outflow, in central-west Sumatra, where it is endemic

Hemibagrus macropterus Bleeker 1870    macro-, long; pterus, fin, referring to long adipose fin

Hemibagrus maydelli (Rössel 1964)    in honor of Gustav Adolf von Maydell (1919-1959), University of Hamburg, who collected type

Hemibagrus menoda (Hamilton 1822)    local name for this species in Bangladesh

Hemibagrus microphthalmus (Day 1877)    micro-, small; ophthalmus, eye, presumably referring to eye diameter 1/6 length of head

Hemibagrus nemurus (Valenciennes 1840)    nema-, thread; urus, tail, presumably referring to thread-like extension of upper caudal-fin lobe

Hemibagrus olyroides (Roberts 1989)    oides, having the form of: referring to superficial resemblance to (and possible relationship with) Olyra

Hemibagrus peguensis (Boulenger 1894)    –ensis, suffix denoting place: Pegu (now called Bago), referring to Bago Region of Myanmar, type locality

Hemibagrus planiceps (Valenciennes 1840)    planus, flat; –ceps, head, referring to its “remarquable” flat head

Hemibagrus pluriradiatus (Vaillant 1892)    pluri-, more; radiatus, rayed, having more dorsal-fin rays than other species of Macrones (a catch-all genus of Indian bagrids, now a synonym of Sperata) known at the time

Hemibagrus punctatus (Jerdon 1849)    spotted, referring to row of black spots on sides

Hemibagrus sabanus (Inger & Chin 1959)    anus, belonging to: Sabah, local name for North Borneo (Malaysia and Indonesia), where it is endemic

Hemibagrus semotus Ng & Kottelat 2013    Latin for pushed aside, referring to relatively large distance between dorsal and adipose fins

Hemibagrus spilopterus Ng & Rainboth 1999    spilos, spot; pterus, fin, referring to black spot on adipose fin

Hemibagrus variegatus Ng & Ferraris 2000    variegated, i.e., of different colors, referring to irregular dark-brown markings on sides

Hemibagrus velox Tan & Ng 2000    fast, referring to its habitat (fast-flowing streams and rivers)

Hemibagrus vietnamicus Mai 1978    –icus, belonging to: Viêt Nam, where it is endemic

Hemibagrus wyckii (Bleeker 1858)    in honor of H.C. Van der Wijck, Knight of the Order of the Netherlands Lion, Regent of the Preanger Regencies, Java, Indonesia (type locality), who invited Bleeker to a fishing party in which the river was poisoned with “akar toeba” (a plant whose roots contain the ichthyocide rotenone) and large masses of stunned fishes were ladled from the water [a regency is a rural area, larger than a city; a regent is its leader, similar to a mayor]

Hemibagrus wyckioides (Fang & Chaux 1949)    –oides, having the form of: referring to close resemblance to M. wyckii

Hemileiocassis Ng & Lim 2000    hemi-, half, referring to close resemblance to Leiocassis

Hemileiocassis panjang Ng & Lim 2000    Malay for long, referring to elongate body shape

Hyalobagrus Ng & Kottelat 1998    hyalos, transparent, referring to translucent body, i.e., a genus of transparent bagrid catfishes

Hyalobagrus flavus Ng & Kottelat 1998    yellow, referring to coloration in life

Hyalobagrus leiacanthus Ng & Kottelat 1998    leios, smooth; acanthus, thorn, referring to lack of serrations on anterior edge of pectoral spine

Hyalobagrus ornatus (Duncker 1904)    decorated, referring to brown longitudinal stripe and black spots on translucent body

Leiocassis Bleeker 1857    leios, smooth; cassis, helmet, referring to covering of skin and muscle on head

Leiocassis aculeata Ng & Hadiaty 2005    sharp-pointed or stinging, referring to large spines compared to L. micropogon

Leiocassis collina Ng & Lim 2006    hilly, referring to hillstream habitat in northeast Borneo

Leiocassis hosii Regan 1906    in honor of Charles Hose (1863-1929), British colonial administrator, zoologist and ethnologist, who collected type

Leiocassis longibarbus Cui 1990    longus, long; barbis, barbel, referring to longer barbels compared to L. (=Pseudobagrus) tenuifurcatus and L. (=Tachysurus) crassilabris

Leiocassis longirostris Günther 1864    longus, long; rostris, snout, referring to “much produced and conical” snout

Leiocassis micropogon (Bleeker 1852)    micro-, small; pogon, beard, referring to eight slender barbels

Leiocassis poeciloptera (Valenciennes 1840)    poecilio-, varicolored; ptera, fin, presumably referring to broad black-brown bands on yellow fins

Leiocassis tenebrica Ng & Lim 2006    dark, referring to uniform brown coloration

Mystus Scopoli 1777    latinization of Greek mystax, whiskered, dating back to at least Belon’s De Aquatilibus (1553) to describe all fishes with whiskers

Mystus abbreviatus (Valenciennes 1840)    shortened, possibly referring to stocky body (“le corps trapu”)

Mystus alasensis Ng & Hadiaty 2005    ensis, suffix denoting place: Sungai Alas (Alas River), Aceh, Sumatra, where it appears to be endemic

Mystus albolineatus Roberts 1994    albus, white; lineatus, lined, referring to white midlateral stripe or line that runs length of lateral-line canal

Mystus ankutta Pethiyagoda, Silva & Maduwage 2008    Sinhalese name for small catfishes

Mystus armatus (Day 1865)    armed with a weapon, presumably referring to serrated to pectoral-fin spines, which inflict “much dreaded” wounds

Mystus armiger Ng 2004    bearing arms, referring to large serrations on pectoral spines

Mystus atrifasciatus Fowler 1937    ater, black; fasciatus, banded, referring to distinct, dark lateral band traversing lateral line

Mystus bimaculatus (Volz 1904)    bi-, two; maculatus, spotted, referring to black spot behind gill opening, similar to the silurid catfish Callichrous (=Ompok) bimaculatus

Mystus bleekeri (Day 1877)    in honor of Dutch medical doctor and ichthyologist Pieter Bleeker (1819-1878), who identified this catfish as M. keletius in 1853

Mystus bocourti (Bleeker 1864)    in honor of zoologist and artist Marie Firmin Bocourt (1819-1904), who collected type and/or sent specimens to Bleeker for his review

Mystus canarensis Grant 1999    –ensis, suffix denoting place: Canara, southern India, type locality [replacement name for Hara malabarica Day 1865, secondarily preoccupied in Mystus by Bagrus malabaricus Jerdon 1849]

Mystus carcio (Hamilton 1822)    presumably local Bengali name for this species in India

Mystus castaneus Ng 2002    chestnut brown, referring to color of body and dorsal surface of head

Mystus catapogon Plamoottil 2016    cata-, very; pogon, beard, i.e., long-bearded, referring to long maxillary (reaching beyond caudal-fin base) and mandibular (reaching ventral-fin base) barbels

Mystus cavasius (Hamilton 1822)    latinization of Kavasi, from Kavasi tenggara, local Hindi name for this species in India

Mystus cineraceus Ng & Kottelat 2009    ashy, referring to ash-like (gray) coloration

Mystus dibrugarensis (Chaudhuri 1913)    ensis, suffix denoting place: Dibrugarh, Assam, India, type locality

Mystus falcarius Chakrabarty & Ng 2005  ius, adjectival suffix: falk, sickle, referring to both markedly concave dorsoposterior margin of dorsal fin and crescent-shaped humeral mark

Mystus gulio (Hamilton 1822)    latinization of Guli, local Bengali name for this species in India

Mystus heoki Plamoottil & Abraham 2013    in honor of the “eminent scientist” Heok Hee Ng, National University of Singapore, for his many contributions to the taxonomy of catfishes

Mystus horai Jayaram 1954    in honor of ichthyologist Sunder Lal Hora (1896-1955), Director, Zoological Survey of India, who collected type

Mystus impluviatus Ng 2003    skylight, referring to second posterior fontanel on supraoccipital

Mystus indicus Plamoottil & Abraham 2013    Indian, referring to country where it is endemic

Mystus keletius (Valenciennes 1840)    latinization of kéléti, local Pondichery name for this catfish (and for M. cavasius)

Mystus keralai Plamoottil & Abraham 2014    of Kerala, India, only known area of occurrence

Mystus leucophasis (Blyth 1860)    leucos, white; phasis, appearance, referring to its “remarkable” coloring, “the head and fore-part of the body being bright silky-white above”

Mystus malabaricus (Jerdon 1849)    –icus, belonging to: Malabar (i.e., southern India), where it occurs

Mystus menoni Plamoottil & Abraham 2013    in honor of “eminent scientist” A.G.K. Menon (1921-2002), Zoological Survey of India, for his contributions to the taxonomy of freshwater fishes in India

Mystus montanus (Jerdon 1849)      mountain, allusion not explained, probably referring to its occurrence in hill or mountain streams

Mystus multiradiatus Roberts 1992  multi-, many; radiatus, rayed, referring to >40 gill rakers on first gill arch, more than any congener known at time except M. mysticetus

Mystus mysticetus Roberts 1992    generic name of baleen whales, referring to numerous slender, baleen-like gill rakers

Mystus nanus Sudasinghe, Pethiyagoda, Maduwage & Meegaskumbura 2016    dwarf, referring to its diminutive size when compared to M. vittatus, with which it had been misidentified

Mystus ngasep Darshan, Vishwanath, Mahanta & Barat 2011    local Manipuri name for this fish

Mystus nigriceps (Valenciennes 1840)    nigri-, black; ceps, head, referring to its blackish head

Mystus oculatus (Valenciennes 1840)    eyed, presumably referring to its large eyes, “almost a third of the length of the head and hardly a diameter between the two eyes” (translation)

Mystus pelusius (Solander 1794)     etymology not explained, perhaps derived from pelusios, mud or clay

Mystus pulcher (Chaudhuri 1911)    beautiful, presumably referring to coloration, highlighted by two “conspicuous and intensely black circular blotches” on sides

Mystus punctifer Ng, Wirjoatmodjo & Hadiaty 2001    punctus, spot; fero-, to bear, referring to prominent humeral spot

Mystus rhegma Fowler 1935    Greek for breach, referring to distinct notch (1/7 length of adipose fin) between dorsal and adipose fins

Mystus rufescens (Vinciguerra 1890)    reddish, referring to reddish-brown body coloration

Mystus seengtee (Sykes 1839)    Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Mystus singaringan (Bleeker 1846)    derived from Ikan Singaringan, local Malay name for this species (ikan=fish)

Mystus tengara (Hamilton 1822)    local Bengali name for this species in India

Mystus velifer Ng 2012    velum, sail; fero, to bear, referring to relatively elongate first dorsal-fin ray

Mystus vittatus (Bloch 1794)    banded, referring to light-blue stripes on sides

Mystus wolffii (Bleeker 1851)    in honor of Bleeker’s friend J. Wolff, who collected type

Mystus zeylanicus Ng & Pethiyagoda 2013    icus, belonging to: Zeylan, an early Dutch name for Sri Lanka, where it is endemic

Olyra McClelland 1842    etymology not explained, perhaps from Olyra, Greek for a kind of grain (perhaps rye), or Olyra Linneaus 1759, a genus of neotropical grasses, perhaps referring to similarity of some Olyra leaves (pointed at one end) to pointed tail of O. longicaudata

Olyra astrifera Arunachalam, Raja, Mayden & Chandran 2013    aster, star; fero-, to bear, referring to star-shaped dots all over body

Olyra burmanica Day 1872    ica, belong to: Burma (now Myanmar), where it is endemic

Olyra horae (Prashad & Mukerji 1929)    patronym not identified but clearly in honor of ichthyologist Sunder Lal Hora (1896-1955), Zoological Survey of India

Olyra longicaudata McClelland 1842    longus, long; caudata, tailed, probably referring to middle rays of the tail “prolonged to a lengthened point”

Olyra praestigiosa Ng & Ferraris 2016    Latin for “full of deceitful tricks,” referring to confusion surrounding its identity (previously identified under three different names)

Olyra saginata Ng, Lalramliana & Lalthanzara 2014    fattened, crammed or feasted, referring to relatively deep body compared to congeners from northeastern part of Indian subcontinent

Pseudomystus Jayaram 1968    pseudo-, false, proposed as a subgenus of Leiocassis, with features that resemble Mystus and represent a “transitional stage in the evolution” of Pseudomystus from the “more generalized” Mystus

Pseudomystus bomboides Kottelat 2000    oides, having the form of: bombus, bumblebee, referring to barred color pattern

Pseudomystus breviceps (Regan 1913)    brevis, short; ceps, head, presumably referring to head “nearly as broad as long,” compared to “longer than broad” on several other congeners

Pseudomystus carnosus Ng & Lim 2005    fleshy, referring to robust body compared to P. moeschii

Pseudomystus flavipinnis Ng & Rachmatika 1999    flavus, yellow; pinnis, fin, referring to “uniformly yellow” caudal fin

Pseudomystus fumosus Ng & Lim 2005    smoke, referring to uniform grayish-brown body

Pseudomystus funebris Ng 2010    funereal, i.e., clothed in black, referring to blackwater habitat

Pseudomystus heokhuii Lim & Ng 2008    in honor of ichthyologist Heok Hui Tan, National University of Singapore, who brought this fish to the authors’ attention

Pseudomystus inornatus (Boulenger 1894)    undecorated, referring to uniform dark-brown coloration

Pseudomystus leiacanthus (Weber & de Beaufort 1912)    leios, smooth; acanthus, spine, referring to smooth (not serrated) dorsal-fin spine

Pseudomystus mahakamensis (Vaillant 1902)    ensis, suffix denoting place: Mahakam River, eastern Kalimantan, Borneo, Indonesia, type locality

Pseudomystus moeschii (Boulenger 1890)    in honor of Swiss geologist Casimir Moesch (also spelled Mösch, 1827-1899), who collected type

Pseudomystus myersi (Roberts 1989)    in honor of Stanford University ichthyologist George S. Myers (1905-1985), Roberts’ teacher and himself a student of Asian fishes

Pseudomystus robustus (Inger & Chin 1959)    referring to its robust body shape

Pseudomystus rugosus (Regan 1913)    “upper surface of head, behind the orbits, naked, rugose”

Pseudomystus siamensis (Regan 1913)    ensis, suffix denoting place: Siam, or Thailand, where it appears to be endemic (also, type specimen “received in 1897 from the Royal Siamese Museum”)

Pseudomystus sobrinus Ng & Freyhof 2005    a cousin on the mother’s side, referring to close resemblance to P. siamensis

Pseudomystus stenogrammus Ng & Siebert 2005    stenos, narrow; gramme, line, referring to thin white line along lateral line

Pseudomystus stenomus (Valenciennes 1840)    stenos, narrow; omos, shoulder (humeral region?), allusion not explained nor evident

Pseudomystus vaillanti (Regan 1913)    in honor of Léon Vaillant (1834-1914), Muséum national d’Histoire naturelle (Paris), who identified this species as P. moeschii in 1902

Rama Bleeker 1858    tautonymous with Pimelodus rama (see species name)

Rama rama (Hamilton 1822)    etymology not explained, possibly named for Rama, the seventh avatar of Vishnu (Hinduism), or perhaps a diminutive of Chandramara chandramara, which Hamilton said it “strongly resembles”

Sperata Holly 1939    a-, belonging to: Maria Adolfine Sperat, Holly’s late mother-in-law, who had supported Holly’s studies with “great understanding” or “sympathy” (depending on the translation) [replacement name for Macrones Duméril 1856, preoccupied by Macrones Newman 1841 in Coleoptera]

Sperata acicularis Ferraris & Runge 1999    needlelike, referring to long, slender supraoccipital spine that most readily distinguishes it from its congeners

Sperata aor (Hamilton 1822)    aor (also spelled auri and arii), local Bengali name for this species in India

Sperata aorella (Blyth 1858)    ella, a diminutive, referring to similarity (“Hithero confounded”) with S. aor

Sperata seenghala (Sykes 1839)    Marathi vernacular for this species in India, which, as Sykes explained in 1841, he adopted “so that naturalists who travel the country can always obtain” the species

Sundolyra Ng, Hadiaty, Lundberg & Luckenbill 2015    Sunda, referring to Sunda Shelf, southeast extension of continental shelf of Southeast Asia, where it occurs (northwestern Sumatra); Olyra, genus to which it is most similar

Sundolyra latebrosa Ng, Hadiaty, Lundberg & Luckenbill 2015    hidden, retired or secret, referring to its cryptic nature and apparent rarity

Tachysurus Lacepède 1803     tachys, swift; urus, tail, referring to presumed agility of T. sinensis based on its “long and nimble” tail (translation)

Tachysurus adiposalis (Oshima 1919)    alis, adjectival suffix: referring to long adipose fin, much longer than anal fin

Tachysurus albomarginatus (Rendahl 1928)    albus, white; marginatus, margined, referring to white edges on dorsal, pelvic and caudal fins

Tachysurus analis (Nichols 1930)    anal, referring to longer anal fin compared to Leiocassis (=Pelteobagrus) ussuriensis

Tachysurus argentivittatus (Regan 1905)    argentum, silver; vittatus, banded, referring to silver lateral band extending from opercle to base of caudal fin

Tachysurus aurantiacus (Temminck & Schlegel 1846)    orange-colored, referring to “bright orange-yellow” color (translation) in life

Tachysurus brachyrhabdion (Cheng, Ishihara & Zhang 2008)    brachys, short; rhabdion, barbel, referring to shorter maxillary barbel compared to other congeners with a truncate or slightly emarginated caudal fin

Tachysurus brashnikowi (Berg 1907)    in honor of Russian ichthyologist and fisheries chief Vladimir Konstantinovich Brashnikov (1870-1921), who organized several expeditions in the Amur River basin and collected type

Tachysurus brevianalis (Regan 1908)    brevis, short; analis, anal, referring to shorter anal fin compared to Pseudobagrus aurantiacus, its presumed congener at the time

Tachysurus brevicaudatus (Wu 1930)    brevis, short; caudatus, tailed, referring to shorter caudal peduncle compared to Leiocassis emarginatus (=Pseudobagrus pratti)

Tachysurus brevirostris (Nguyen 2005)    brevis, short; rostris, snout, referring to short and blunt snout, shorter than postorbital length

Tachysurus crassilabris (Günther 1864)    crassus, thick or fat; labrus, lip, referring to “soft and fleshy” upper lip

Tachysurus eupogon (Boulenger 1892)    eu-, well or very; pogon, beard, presumably referring to nasal barbels (“twice and a half as long as eye”), maxillary barbels (“a little longer than the head”), and/or outer mandibular barbels (“three fourths the length of the head, inner one half”)

Tachysurus fui (Miao 1934)    in honor of Tung-sheng Fu, Honan Museum (no other information available)

Tachysurus fulvidraco (Richardson 1846)    fulvus, yellow; draco, dragon, Latin transliteration of Chinese name, Hawng lung (Yellow dragon”), presumably referring to “sienna-yellow” vertical bands on body and brownish-yellow fins

Tachysurus gracilis (Li, Chen & Chan 2005)    slender, referring to elongated and thin body

Tachysurus herzensteini (Berg 1907)    in honor of Russian ichthyologist Solomon Markovich Herzenstein (1854-1894), who identified this species as a distinct form of Macrones (=Pelteobagrus) ussuriensis in 1887

Tachysurus hoi (Pellegrin & Fang 1940)    in honor of Ho Ting Chieh, National University of Wu Han (now Wuhan University), who collected type and presented it, along with other Chinese fishes, to the Muséum national d’Histoire naturelle (Paris)

Tachysurus intermedius (Nichols & Pope 1927)    intermediate between T. fulvidraco and “one or more related ones on the mainland [of China] with short, slender barbels”

Tachysurus kaifenensis (Tchang 1934)    ensis, suffix denoting place: Kaifeng, Henan, China, type locality

Tachysurus koreanus (Uchida 1990)    Korean, referring to country where it is endemic

Tachysurus kyphus (Mai 1978)    presumably referring to Ky Phu stream, Dai Tu District, Thai Nguyen Province, northern Viêt Nam, type locality

Tachysurus longispinalis (Nguyen 2005)    longus, long; spinialis, spiny, referring to long and sharp dorsal-fin spine, about 2/3 of head length

Tachysurus medianalis (Regan 1904)    media-, middle; analis, anal, referring to its 17-18 anal-fin rays, relevance not evident, perhaps within the middle range compared to related species

Tachysurus microps (Rendahl 1933)    micro-, small; ops, eye, referring to smaller eyes compared to P. crassilabris

Tachysurus nitidus (Sauvage & Dabry de Thiersant 1874)    neat, elegant or shining, allusion not explained, perhaps referring to “reddish body, wine-colored towards the back” (translation)

Tachysurus nubilosus (Ng & Freyhof 2007)    cloudy, referring to color pattern (cream patches on a brown body)

Tachysurus nudiceps (Sauvage 1883)    nudus, bare; ceps, head, i.e., bony or skinless, presumably referring to top of head, which is granulated, with a very thin covering of skin

Tachysurus omeihensis (Nichols 1941)    –ensis, suffix denoting place: Omeihsien, Sichuan Province, China, type locality

Tachysurus ondon (Shaw 1930)    etymology not explained; name does not appear to be a Latin word, does not correspond with Chinese vernacular (“angtang”), and does not match any area in China that we can find

Tachysurus pratti (Günther 1892)    in honor of naturalist Antwerp Edgar Pratt (1852-1924), who collected type

Tachysurus sinensis Lacepède 1803    ensis, suffix denoting place: Sinica (China), a Chinese catfish (that may occur elsewhere in Asia) described from a Chinese painting

Tachysurus spilotus Ng 2009    spot, referring to spots on bases of caudal-fin lobes

Tachysurus taiwanensis (Oshima 1919)    –ensis, suffix denoting place: Taiwan, where it is endemic

Tachysurus taeniatus (Günther 1873)    banded, referring to broad blackish along the sides

Tachysurus tenuifurcatus (Nichols 1931)    tenuis, thin, referring to similar elongate body shape compared to P. tenuis; furcatus, forked, referring to “deeply forked” caudal fin

Tachysurus tenuis (Günther 1873)    thin, referring to “much elongate” body, “very short and thin” barbels, and/or “thin skin” covering smooth head

Tachysurus tokiensis (Döderlein 1887)    ensis, suffix denoting place: Tokyo, Japan, type locality

Tachysurus tonkinensis (Nguyen 2005)    ensis, suffix denoting place: Tonkin, referring to distribution in the northern plains of Viêt Nam

Tachysurus trilineatus (Zheng 1979)    ri-, three; lineatus, lined, referring to three yellowish lines on each side of body

Tachysurus ussuriensis (Dybowski 1872)    ensis, suffix denoting place: Ussuri River, Russia, one of the type localities (also occurs in China and Korea)

Tachysurus vachellii (Richardson 1846)    in honor of Rev. George Harvey Vachell (1799-1839), who “presented” type

Tachysurus virgatus (Oshima 1926)    branched, probably referring to bluish black band along lateral line, “forked at the caudal base, [with] each branch reaching the tip [of the] caudal lobe”

Tachysurus yeni (Nguyen & Nguyen 2005)    in honor of ichthyologist Mai Đinh Yên, who identified this catfish as a distinct population of Mystus gulio in 1978