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Ophidiidae Cusk-eels
- Abyssobrotula galatheae Abyssal Brotula
- Acanthonus armatus Bony-eared Assfish
- Apagesoma delosommatus Flabby Brotula
- Apagesoma edentatum Smooth-palate Brotula
- Barathrites iris Smallheaded Cusk-eel
- Barathrites parri Parr's Cusk-eel
- Barathrodemus manatinus Manatee Cusk-eel
- Bassogigas gillii Gill's Cusk-eel
- Bassozetus levistomatus Japanese Assfish
- Bassozetus mozambiquensis Mozambique Assfish
- Bassozetus nielseni Nielsen's Assfish
- Bassozetus normalis Normal Assfish
- Bassozetus taenia Atlantic Assfish
- Bassozetus trachibranchus Roughgilled Assfish
- Bathyonus laticeps Broadhead Cusk-eel
- Bathyonus pectoralis Threadfin Cusk-eel
- Benthocometes robustus Robust Brotula
- Brotula barbata Bearded Brotula
- Brotulotaenia brevicauda Shorttail Cusk-eel
- Brotulotaenia crassa Violet Cusk-eel
- Brotulotaenia nigra Dark Cusk
- Dicrolene introniger Digitate Cusk-eel
- Dicrolene kanazawai Kanazawa's Cusk-eel
- Eretmichthys aff. pinnatus Longarm Cusk-eel
- Genypterus blacodes Marbled Pink Cusk-eel
- Genypterus brasiliensis Plain Pink Cusk-eel
- Holcomycteronus brucei Subantarctic Cusk-eel
- Holcomycteronus profundissimus Abyssal Cusk-eel
- Holcomycteronus squamosus Squamose Cusk-eel
- Lamprogrammus brunswigi Dark Cuskeel
- Lamprogrammus niger Black Cusk-eel
- Lamprogrammus shcherbachevi Scaleline Cusk-eel
- Lepophidium aporrhox Dusky Cusk-eel
- Lepophidium brevibarbe Blackedge Cusk-eel
- Lepophidium collettei Brazilian Cusk-eel
- Lepophidium crossotum Whitespot Cusk-eel
- Lepophidium cultratum Blackear Cusk-eel
- Lepophidium entomelan Blackthroat Cusk-eel
- Lepophidium gilmorei Pepperfin Cusk-eel
- Lepophidium jeannae Mottled Cusk-eel
- Lepophidium kallion Palenose Cusk-eel
- Lepophidium marmoratum Marbled Cusk-eel
- Lepophidium pheromystax Upsilon Cusk-eel
- Lepophidium profundorum Fawn Cusk-eel
- Lepophidium robustum Robust Cusk-eel
- Lepophidium staurophor Barred Cusk-eel
- Lepophidium wileyi Fringed Cusk-eel
- Lepophidium zophochir Sooty Cusk-eel
- Leucicorus atlanticus Atlantic Blackeyed Cusk-eel
- Leucicorus gerringerae Brazilian Blackeye Cusk-eel
- Luciobrotula brasiliensis Brazilian Flathead Brotula
- Luciobrotula corethromycter Atlantic Flathead Brotula
- Monomitopus agassizii Agassiz's Cusk-eel
- Monomitopus americanus American Cusk-eel
- Monomitopus magnus Magnum Cusk-eel
- Neobythites braziliensis Saddled Brotula
- Neobythites elongatus Elongate Brotula
- Neobythites gilli Two-spot Brotula
- Neobythites marginatus Pinstriped Brotula
- Neobythites monocellatus One-spot Brotula
- Neobythites multidigitatus Many-rayed Brotula
- Neobythites multiocellatus Many-spot Brotula
- Neobythites ocellatus Ocellated Brotula
- Neobythites unicolor Plain Brotula
- Ophidion antipholus Longnose Cusk-eel
- Ophidion dromio Shorthead Cusk-eel
- Ophidion grayi Blotched Cusk-eel
- Ophidion guianense Guianan Cusk-eel
- Ophidion holbrookii Banded Cusk-eel
- Ophidion josephi Spotted Cusk-eel
- Ophidion lagochila Harelip Cusk-eel
- Ophidion marginatum Striped Cusk-eel
- Ophidion nocomis Letter Opener Cusk-eel
- Ophidion puck Pallid Cusk-eel
- Ophidion robinsi Colonial Cusk-eel
- Ophidion selenops Mooneye Cusk-eel
- Ophidion zavalai Brazilian Blackedge Cusk-eel
- Otophidium chickcharney Ghost Cusk-eel
- Otophidium dormitator Sleeper Cusk-eel
- Otophidium omostigma Polkadot Cusk-eel
- Parophidion schmidti Dusky Cusk-eel
- Penopus microphthalmus Frowning Cusk-eel
- Porogadus abyssalis Abyssal Dragon Cusk-eel
- Porogadus catena Smoothhead Dragon Cusk-eel
- Porogadus miles Slender Dragon Cusk-eel
- Pycnocraspedum phyllosoma Stout Cusk-eel
- Raneya brasiliensis Brazilian Banded Cusk-eel
- Spectrunculus crassus Flabby Giant Brotula
- Spectrunculus stenostio Atlantic Giant Brotula
- Tenuicephalus silus Slenderheaded Dragon Cusk-eel
- Xyelacyba myersi Gargoyle Cusk-eel