| Order | Family | Species | Occurrence | FishBase name | Name in Country |
|---|---|---|---|---|---|
| Siluriformes | Amphiliidae | Amphilius platychir | native | Mountain barbel | |
| Siluriformes | Amphiliidae | Amphilius rheophilus | native | ||
| Cichliformes | Cichlidae | Anomalochromis thomasi | native | ||
| Cyprinodontiformes | Procatopodidae | Aplocheilichthys spilauchen | native | Banded lampeye | |
| Cyprinodontiformes | Nothobranchiidae | Archiaphyosemion guineense | native | Guinean killi | |
| Siluriformes | Claroteidae | Auchenoglanis occidentalis | native | Bubu | Gbada |
| Gobiiformes | Gobiidae | Awaous lateristriga | native | West African freshwater goby | |
| Gobiiformes | Butidae | Bostrychus africanus | native | ||
| Osteoglossiformes | Mormyridae | Brienomyrus brachyistius | native | ||
| Osteoglossiformes | Mormyridae | Brienomyrus longianalis | native | ||
| Characiformes | Alestidae | Brycinus macrolepidotus | native | True big-scale tetra | |
| Characiformes | Alestidae | Bryconalestes longipinnis | native | Longfin tetra | Kartei |
| Cyprinodontiformes | Nothobranchiidae | Callopanchax huwaldi | native | ||
| Cyprinodontiformes | Nothobranchiidae | Callopanchax occidentalis | native | Golden pheasant panchax | |
| Cyprinodontiformes | Nothobranchiidae | Callopanchax toddi | native | ||
| Siluriformes | Mochokidae | Chiloglanis polyodon | endemic | ||
| Siluriformes | Claroteidae | Chrysichthys johnelsi | native | Ba-sagoin bethuguye | |
| Siluriformes | Claroteidae | Chrysichthys maurus | native | ||
| Siluriformes | Claroteidae | Chrysichthys nigrodigitatus | native | Belly up | Ba-sagoin bethuguye |
| Pleuronectiformes | Cyclopsettidae | Citharichthys stampflii | native | Smooth flounder | |
| Siluriformes | Clariidae | Clarias anguillaris | native | Mudfish | |
| Siluriformes | Clariidae | Clarias buettikoferi | native | ||
| Siluriformes | Clariidae | Clarias salae | native | ||
| Cichliformes | Cichlidae | Coelotilapia joka | native | ||
| Cichliformes | Cichlidae | Coptodon guineensis | native | Guinean tilapia | |
| Cichliformes | Cichlidae | Coptodon louka | native | ||
| Cichliformes | Cichlidae | Coptodon zillii | native | Redbelly tilapia | A-sannoh |
| Anabantiformes | Anabantidae | Ctenopoma kingsleyae | native | Tailspot ctenopoma | |
| Anguilliformes | Ophichthidae | Dalophis boulengeri | native | ||
| Gobiiformes | Eleotridae | Eleotris daganensis | native | ||
| Gobiiformes | Eleotridae | Eleotris senegalensis | native | ||
| Gobiiformes | Eleotridae | Eleotris vittata | native | ||
| Cypriniformes | Cyprinidae | Enteromius ablabes | native | ||
| Cypriniformes | Cyprinidae | Enteromius bagbwensis | endemic | ||
| Cypriniformes | Cyprinidae | Enteromius bigornei | native | ||
| Cypriniformes | Cyprinidae | Enteromius foutensis | native | ||
| Cypriniformes | Cyprinidae | Enteromius inaequalis | native | ||
| Cypriniformes | Cyprinidae | Enteromius leonensis | native | ||
| Cypriniformes | Cyprinidae | Enteromius liberiensis | native | ||
| Cypriniformes | Cyprinidae | Enteromius macrops | native | Blackstripe barb | |
| Cypriniformes | Cyprinidae | Enteromius tiekoroi | native | ||
| Cyprinodontiformes | Nothobranchiidae | Epiplatys annulatus | native | Banded panchax | |
| Cyprinodontiformes | Nothobranchiidae | Epiplatys barmoiensis | native | ||
| Cyprinodontiformes | Nothobranchiidae | Epiplatys bifasciatus | native | ||
| Cyprinodontiformes | Nothobranchiidae | Epiplatys fasciolatus | native | ||
| Cyprinodontiformes | Nothobranchiidae | Epiplatys josianae | native | ||
| Cyprinodontiformes | Nothobranchiidae | Epiplatys lamottei | native | Redspotted panchax | |
| Cyprinodontiformes | Nothobranchiidae | Epiplatys njalaensis | native | ||
| Myliobatiformes | Dasyatidae | Fontitrygon ukpam | native | Thorny freshwater stingray | |
| Gobiiformes | Gobiidae | Gobioides sagitta | native | ||
| Osteoglossiformes | Gymnarchidae | Gymnarchus niloticus | native | Aba | Kpoyei |
| Cichliformes | Cichlidae | Hemichromis fasciatus | native | Banded jewelfish | Gbamgbama |
| Characiformes | Hepsetidae | Hepsetus occidentalis | native | K-thin | |
| Siluriformes | Clariidae | Heterobranchus isopterus | native | ||
| Siluriformes | Clariidae | Heterobranchus longifilis | native | Sampa | |
| Cichliformes | Cichlidae | Heterotilapia buettikoferi | native | Zebra tilapia | |
| Osteoglossiformes | Mormyridae | Hippopotamyrus paugyi | native | ||
| Characiformes | Alestidae | Hydrocynus forskahlii | native | Elongate tigerfish | Ka-gbith |
| Characiformes | Distichodontidae | Ichthyborus quadrilineatus | native | ||
| Osteoglossiformes | Mormyridae | Isichthys henryi | native | Karump | |
| Gobiiformes | Butidae | Kribia kribensis | native | ||
| Gobiiformes | Butidae | Kribia leonensis | endemic | ||
| Gobiiformes | Butidae | Kribia nana | native | ||
| Cypriniformes | Cyprinidae | Labeo alluaudi | native | ||
| Cypriniformes | Cyprinidae | Labeo coubie | native | African carp | |
| Cypriniformes | Cyprinidae | Labeo curriei | native | ||
| Cypriniformes | Cyprinidae | Labeo parvus | native | ||
| Cypriniformes | Cyprinidae | Labeobarbus gruveli | native | ||
| Cypriniformes | Cyprinidae | Labeobarbus sacratus | native | ||
| Cypriniformes | Cyprinidae | Labeobarbus wurtzi | native | ||
| Characiformes | Alestidae | Ladigesia roloffi | native | Sierra leone dwarf characin | |
| Carangaria/misc | Latidae | Lates niloticus | native | Nile perch | |
| Cypriniformes | Danionidae | Leptocypris guineensis | native | ||
| Cypriniformes | Danionidae | Leptocypris taiaensis | endemic | ||
| Eupercaria/misc | Lutjanidae | Lutjanus dentatus | native | African brown snapper | Grouper |
| Siluriformes | Malapteruridae | Malapterurus barbatus | native | ||
| Siluriformes | Malapteruridae | Malapterurus leonensis | endemic | ||
| Siluriformes | Malapteruridae | Malapterurus punctatus | native | ||
| Siluriformes | Malapteruridae | Malapterurus stiassnyae | native | ||
| Osteoglossiformes | Mormyridae | Marcusenius mento | native | ||
| Osteoglossiformes | Mormyridae | Marcusenius meronai | endemic | ||
| Osteoglossiformes | Mormyridae | Marcusenius thomasi | native | ||
| Synbranchiformes | Mastacembelidae | Mastacembelus liberiensis | native | ||
| Synbranchiformes | Mastacembelidae | Mastacembelus taiaensis | native | ||
| Characiformes | Alestidae | Micralestes occidentalis | native | ||
| Syngnathiformes | Syngnathidae | Microphis aculeatus | native | ||
| Siluriformes | Mochokidae | Mochokiella paynei | endemic | ||
| Synbranchiformes | Synbranchidae | Monopterus boueti | native | Liberian swamp eel | |
| Osteoglossiformes | Mormyridae | Mormyrops anguilloides | native | Cornish jack | Aloh |
| Osteoglossiformes | Mormyridae | Mormyrops breviceps | native | ||
| Osteoglossiformes | Mormyridae | Mormyrops caballus | native | ||
| Osteoglossiformes | Mormyridae | Mormyrus macrophthalmus | native | Magbukpui | |
| Osteoglossiformes | Mormyridae | Mormyrus rume | native | Mormyrids | Kayani |
| Osteoglossiformes | Mormyridae | Mormyrus tapirus | native | ||
| Mugiliformes | Mugilidae | Mugil cephalus | native | Flathead grey mullet | Kunungui |
| Characiformes | Distichodontidae | Nannocharax ansorgii | native | ||
| Characiformes | Distichodontidae | Nannocharax fasciatus | native | ||
| Gobiiformes | Gobiidae | Nematogobius maindroni | native | ||
| Mugiliformes | Mugilidae | Neochelon falcipinnis | native | Sicklefin mullet | Mollit |
| Characiformes | Distichodontidae | Neolebias unifasciatus | native | ||
| Siluriformes | Claroteidae | Notoglanidium maculatum | endemic | ||
| Siluriformes | Claroteidae | Notoglanidium thomasi | endemic | ||
| Cichliformes | Cichlidae | Oreochromis niloticus | introduced | Nile tilapia | |
| Osteoglossiformes | Pantodontidae | Pantodon buchholzi | native | Freshwater butterflyfish | |
| Osteoglossiformes | Notopteridae | Papyrocranus afer | native | Reticulate knifefish | Fak |
| Anabantiformes | Channidae | Parachanna obscura | native | African obscure snakehead | |
| Siluriformes | Schilbeidae | Parailia spiniserrata | native | ||
| Siluriformes | Amphiliidae | Paramphilius trichomycteroides | native | ||
| Clupeiformes | Dorosomatidae | Pellonula leonensis | native | Smalltoothed pellonula | |
| Clupeiformes | Dorosomatidae | Pellonula vorax | native | Bigtoothed pellonula | |
| Cichliformes | Cichlidae | Pelmatochromis buettikoferi | native | ||
| Cichliformes | Cichlidae | Pelvicachromis roloffi | native | ||
| Osteoglossiformes | Mormyridae | Petrocephalus bovei | native | ||
| Osteoglossiformes | Mormyridae | Petrocephalus levequei | native | ||
| Osteoglossiformes | Mormyridae | Petrocephalus pellegrini | native | ||
| Osteoglossiformes | Mormyridae | Petrocephalus simus | native | ||
| Osteoglossiformes | Mormyridae | Petrocephalus tenuicauda | native | ||
| Eupercaria/misc | Haemulidae | Pomadasys jubelini | native | Sompat grunt | Sompie |
| Gobiiformes | Gobiidae | Porogobius schlegelii | native | ||
| Cyprinodontiformes | Procatopodidae | Poropanchax normani | native | Norman's lampeye | |
| Rhinopristiformes | Pristidae | Pristis microdon | native | Largetooth sawfish | |
| Cypriniformes | Cyprinidae | Prolabeo batesi | endemic | ||
| Ceratodontiformes | Protopteridae | Protopterus annectens | native | West African lungfish | Bopr |
| Cypriniformes | Danionidae | Raiamas nigeriensis | native | ||
| Cypriniformes | Danionidae | Raiamas scarciensis | endemic | ||
| Cypriniformes | Danionidae | Raiamas steindachneri | native | ||
| Characiformes | Alestidae | Rhabdalestes septentrionalis | native | ||
| Cichliformes | Cichlidae | Rubricatochromis bimaculatus | native | Jewelfish | Gboblie |
| Cichliformes | Cichlidae | Rubricatochromis guttatus | native | ||
| Cichliformes | Cichlidae | Rubricatochromis letourneuxi | native | Jewel fish | |
| Cichliformes | Cichlidae | Rubricatochromis paynei | native | ||
| Cichliformes | Cichlidae | Sarotherodon caudomarginatus | native | ||
| Cichliformes | Cichlidae | Sarotherodon melanotheron | native | Blackchin tilapia | |
| Cichliformes | Cichlidae | Sarotherodon occidentalis | native | ||
| Siluriformes | Schilbeidae | Schilbe intermedius | native | Silver catfish | |
| Siluriformes | Schilbeidae | Schilbe micropogon | native | ||
| Siluriformes | Schilbeidae | Schilbe mystus | native | African butter catfish | |
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion bertholdi | native | Berthold's killi | |
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion brueningi | native | Bruening's killi | |
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion chaytori | endemic | ||
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion etzeli | native | ||
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion fredrodi | endemic | ||
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion geryi | native | Gérys killi | |
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion liberiense | native | ||
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion roloffi | native | ||
| Cyprinodontiformes | Nothobranchiidae | Scriptaphyosemion wieseae | endemic | ||
| Clupeiformes | Dorosomatidae | Sierrathrissa leonensis | native | West African pygmy herring | |
| Siluriformes | Mochokidae | Synodontis annectens | native | ||
| Siluriformes | Mochokidae | Synodontis ansorgii | native | ||
| Siluriformes | Mochokidae | Synodontis thysi | native | ||
| Siluriformes | Mochokidae | Synodontis waterloti | native | ||
| Tetraodontiformes | Tetraodontidae | Tetraodon lineatus | native | Globe fish | Gbatagbotei |
| Cichliformes | Cichlidae | Tilapia brevimanus | native | ||
| Carangiformes | Carangidae | Trachinotus teraia | native | Shortfin pompano | |
| Cichliformes | Cichlidae | Tylochromis intermedius | native | ||
| Cichliformes | Cichlidae | Tylochromis jentinki | native | ||
| Cichliformes | Cichlidae | Tylochromis leonensis | native | ||
| Cichliformes | Cichlidae | Wallaceochromis humilis | native | ||
| Osteoglossiformes | Notopteridae | Xenomystus nigri | native | African knifefish | Fak |