-
Gnathophis andriashevi Karmovskaya, 1990
-
Gnathophis bathytopos Smith & Kanazawa, 1977
-
Gnathophis bracheatopos Smith & Kanazawa, 1977
-
Gnathophis capensis Castle, 1986
- Leptocephalus capensis Kaup (ex Lalande), 1856; (valid as)
- Congermuraena australis Barnard, 1923; (synonym)
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Gnathophis catalinensis Eschmeyer & Herald, 1983
- Rhynchocymba catalinensis Wade, 1946; (valid as)
-
Gnathophis cinctus Smith, 1995
- Atopichthys cinctus Garman, 1899; (valid as)
-
Gnathophis codoniphorus Maul, 1972
-
Gnathophis habenatus Castle, 1986
- Congrus habenatus Richardson, 1848; (valid as)
- Poutawa habenata Griffin, 1936; (valid as)
-
Gnathophis heterognathos Smith, 1989
- Myrophis heterognathos Bleeker, 1858-59; (valid as)
- Leptocephalus nystromi Jordan & Snyder, 1901; (synonym)
- Rhynchocymba nystromi Jordan & Hubbs, 1925; (synonym)
- Rhynchocymba nystromi ginanago Asano, 1958; (synonym)
- Gnathophis nystromi Asano, 1984; (synonym)
- Gnathophis nystromi ginanago Asano, 1984; (synonym)
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Gnathophis heterolinea Smith, 1989
- Lemkea heterolinea Kotthaus, 1968; (valid as)
-
Gnathophis leptosomatus Karrer, 1982
-
Gnathophis longicauda Paxton et al., 1989
- Congromuraena longicauda Ramsay & Ogilby, 1888; (valid as)
-
Gnathophis musteliceps Castle, 1995
- Congromuraena musteliceps Alcock, 1894; (valid as)
-
Gnathophis mystax Blache et al., 1973
- Muraena mystax Delaroche, 1809; (valid as)
- Leptocephalus bibroni Kaup, 1856; (synonym)
- Leptocephalus gegenbauri Kaup, 1856; (synonym)
- Leptocephalus koellikeri Kaup, 1856; (synonym)
- Leptocephalus kællikeri Kaup, 1856; (misspelling)
- Leptocephalus yarrellii Kaup, 1856; (synonym)
- Leptocephalus kaupii Facciol , 1882; (synonym)
- Leptocephalus borelli Facciol , 1883; (synonym)
- Leptocephalus gutturosus Facciol , 1883; (synonym)
- Leptocephalus maurolici Facciol , 1883; (synonym)
- Leptocephalus peloritanus Facciol , 1883; (synonym)
- Leptocephalus prestandreae Facciol , 1883; (synonym)
- Leptocephalus sicanus Facciol , 1883; (synonym)
- Leptocephalus tenuirostris Facciol , 1883; (synonym)
- Leptocephalus zancleus Facciol , 1883; (synonym)
- Euleptocephalus sicanus Stræmman, 1896; (synonym)
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Gnathophis parini Karmovskaya, 1990
-
Gnathophis smithi Karmovskaya, 1990
-
Gnathophis tritos Smith & Kanazawa, 1977
-
Gnathophis umbrellabius Paxton et al., 1989
- Fimbriceps umbrellabia Whitley, 1946; (valid as)
- Fimbriceps umbrellabium Whitley, 1946; (valid as)
- Gnathophis incognitus Castle, 1963; (synonym)
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Gnathophis xenica Smith, 1989
- Arisoma nystromi xenica Matsubara & Ochiai, 1951; (valid as)