- Coregonus vessicus — likely to require an intermediate donation
- Coregonus wartmanni — likely to require an intermediate donation
- Coregonus widegreni — likely to require an intermediate donation
- Coregonus zenithicus — likely to require an intermediate donation
- Coregonus zuerichensis — likely to require an intermediate donation
- Coregonus zugensis — likely to require an intermediate donation
- Coreius cetopsis — likely to require an intermediate donation
- Coreius guichenoti — likely to require an intermediate donation
- Coreius heterodon — likely to require an intermediate donation
- Coreius septentrionalis — likely to require an intermediate donation
- Corematodus shiranus — likely to require an intermediate donation
- Corematodus taeniatus — likely to require an intermediate donation
- Coreoleuciscus aeruginos — likely to require an intermediate donation
- Coreoleuciscus splendidus — likely to require an intermediate donation
- Coreoperca herzi — likely to require an intermediate donation
- Coreoperca kawamebari — likely to require an intermediate donation
- Coreoperca liui — likely to require an intermediate donation
- Coreoperca loona — likely to require a low level of donation
- Coreoperca whiteheadi — likely to require an intermediate donation
- Corica laciniata — likely to require an intermediate donation
- Corica soborna — likely to require an intermediate donation
- Coris atlantica — likely to require a low level of donation
- Coris auricularis — likely to require a low level of donation
- Coris aurilineata — likely to require a low level of donation
- Coris aygula — likely to require a low level of donation
- Coris ballieui — likely to require a low level of donation
- Coris batuensis — likely to require a low level of donation
- Coris bulbifrons — likely to require a low level of donation
- Coris caudimacula — likely to require a low level of donation
- Coris centralis — likely to require a low level of donation
- Coris cuvieri — likely to require a low level of donation
- Coris debueni — likely to require a low level of donation
- Coris dorsomacula — likely to require a low level of donation
- Coris flavovittata — likely to require a low level of donation
- Coris formosa — likely to require a low level of donation
- Coris frerei — likely to require an intermediate donation
- Coris gaimard — likely to require a low level of donation
- Coris hewetti — likely to require a low level of donation
- Coris julis — likely to require a low level of donation
- Coris latifasciata — likely to require a low level of donation
- Coris marquesensis — likely to require a low level of donation
- Coris musume — likely to require a low level of donation
- Coris nigrotaenia — likely to require a low level of donation
- Coris picta — likely to require a low level of donation
- Coris pictoides — likely to require a low level of donation
- Coris roseoviridis — likely to require a low level of donation
- Coris sandeyeri — likely to require an intermediate donation
- Coris variegata — likely to require a low level of donation
- Coris venusta — likely to require a low level of donation
- Corniger spinosus — likely to require an intermediate donation
- Corumbataia britskii — likely to require an intermediate donation
- Corumbataia cuestae — likely to require an intermediate donation
- Corumbataia liliai — likely to require an intermediate donation
- Corumbataia lucianoi — likely to require an intermediate donation
- Corumbataia tocantinensis — likely to require an intermediate donation
- Corumbataia veadeiros — likely to require an intermediate donation
- Corvula batabana — likely to require a low level of donation
- Corvula macrops — likely to require a low level of donation
- Corydoras acrensis — likely to require an intermediate donation
- Corydoras acutus — likely to require an intermediate donation
- Corydoras adolfoi — likely to require an intermediate donation
- Corydoras aeneus — likely to require an intermediate donation
- Corydoras agassizii — likely to require an intermediate donation
- Corydoras albolineatus — likely to require an intermediate donation
- Corydoras amandajanea — likely to require an intermediate donation
- Corydoras amapaensis — likely to require an intermediate donation
- Corydoras ambiacus — likely to require an intermediate donation
- Corydoras amphibelus — likely to require an intermediate donation
- Corydoras apiaka — likely to require an intermediate donation
- Corydoras approuaguensis — likely to require an intermediate donation
- Corydoras araguaiaensis — likely to require an intermediate donation
- Corydoras arcuatus — likely to require an intermediate donation
- Corydoras areio — likely to require an intermediate donation
- Corydoras armatus — likely to require an intermediate donation
- Corydoras atropersonatus — likely to require an intermediate donation
- Corydoras aurofrenatus — likely to require an intermediate donation
- Corydoras axelrodi — likely to require an intermediate donation
- Corydoras baderi — likely to require an intermediate donation
- Corydoras bicolor — likely to require an intermediate donation
- Corydoras bifasciatus — likely to require an intermediate donation
- Corydoras bilineatus — likely to require an intermediate donation
- Corydoras blochi — likely to require an intermediate donation
- Corydoras boehlkei — likely to require an intermediate donation
- Corydoras boesemani — likely to require an intermediate donation
- Corydoras bondi — likely to require an intermediate donation
- Corydoras breei — likely to require an intermediate donation
- Corydoras brevirostris — likely to require an intermediate donation
- Corydoras britskii — likely to require an intermediate donation
- Corydoras burgessi — likely to require an intermediate donation
- Corydoras carlae — likely to require an intermediate donation
- Corydoras caudimaculatus — likely to require an intermediate donation
- Corydoras cervinus — likely to require an intermediate donation
- Corydoras cochui — likely to require an intermediate donation
- Corydoras colombianus — likely to require an intermediate donation
- Corydoras concolor — likely to require an intermediate donation
- Corydoras condiscipulus — likely to require an intermediate donation
- Corydoras copei — likely to require an intermediate donation
- Corydoras coppenamensis — likely to require an intermediate donation
- Corydoras coriatae — likely to require an intermediate donation
- Corydoras crimmeni — likely to require an intermediate donation
- Corydoras cruziensis — likely to require an intermediate donation
- Corydoras crypticus — likely to require an intermediate donation
- Corydoras davidsandsi — likely to require an intermediate donation
- Corydoras delphax — likely to require an intermediate donation
- Corydoras difluviatilis — likely to require an intermediate donation
- Corydoras diphyes — likely to require an intermediate donation
- Corydoras duplicareus — likely to require an intermediate donation
- Corydoras ehrhardti — likely to require an intermediate donation
- Corydoras elegans — likely to require an intermediate donation
- Corydoras ellisae — likely to require an intermediate donation
- Corydoras ephippifer — likely to require an intermediate donation
- Corydoras eques — likely to require an intermediate donation
- Corydoras esperanzae — likely to require an intermediate donation
- Corydoras evelynae — likely to require an intermediate donation
- Corydoras eversi — likely to require an intermediate donation
- Corydoras filamentosus — likely to require an intermediate donation
- Corydoras flaveolus — likely to require an intermediate donation
- Corydoras fowleri — likely to require an intermediate donation
- Corydoras garbei — likely to require an intermediate donation
- Corydoras geoffroy — likely to require an intermediate donation
- Corydoras geryi — likely to require an intermediate donation
- Corydoras gladysae — likely to require an intermediate donation
- Corydoras gomezi — likely to require an intermediate donation
- Corydoras gossei — likely to require an intermediate donation
- Corydoras gracilis — likely to require an intermediate donation
- Corydoras griseus — likely to require an intermediate donation
- Corydoras gryphus — likely to require an intermediate donation
- Corydoras guapore — likely to require an intermediate donation
- Corydoras guianensis — likely to require an intermediate donation
- Corydoras habrosus — likely to require an intermediate donation
- Corydoras haraldschultzi — likely to require an intermediate donation
- Corydoras hastatus — likely to require an intermediate donation
- Corydoras hephaestus — likely to require an intermediate donation
- Corydoras heteromorphus — likely to require an intermediate donation
- Corydoras imitator — likely to require an intermediate donation
- Corydoras incolicana — likely to require an intermediate donation
- Corydoras isbrueckeri — likely to require an intermediate donation
- Corydoras julii — likely to require an intermediate donation
- Corydoras kanei — likely to require an intermediate donation
- Corydoras lacerdai — likely to require an intermediate donation
- Corydoras lacrimostigmata — likely to require an intermediate donation
- Corydoras lamberti — likely to require an intermediate donation
- Corydoras latus — likely to require an intermediate donation
- Corydoras leopardus — likely to require an intermediate donation
- Corydoras leucomelas — likely to require an intermediate donation
- Corydoras longipinnis — likely to require an intermediate donation
- Corydoras loretoensis — likely to require an intermediate donation
- Corydoras loxozonus — likely to require an intermediate donation
- Corydoras lymnades — likely to require an intermediate donation
- Corydoras maculifer — likely to require an intermediate donation
- Corydoras mamore — likely to require an intermediate donation
- Corydoras melanistius — likely to require an intermediate donation
- Corydoras melanotaenia — likely to require an intermediate donation
- Corydoras melini — likely to require an intermediate donation
- Corydoras metae — likely to require an intermediate donation
- Corydoras micracanthus — likely to require an intermediate donation
- Corydoras microcephalus — likely to require an intermediate donation
- Corydoras multimaculatus — likely to require an intermediate donation
- Corydoras nanus — likely to require an intermediate donation
- Corydoras napoensis — likely to require an intermediate donation
- Corydoras narcissus — likely to require an intermediate donation
- Corydoras nattereri — likely to require an intermediate donation
- Corydoras negro — likely to require an intermediate donation
- Corydoras nijsseni — likely to require an intermediate donation
- Corydoras noelkempffi — likely to require an intermediate donation
- Corydoras notabilis — likely to require an intermediate donation
- Corydoras oiapoquensis — likely to require an intermediate donation
- Corydoras orcesi — likely to require an intermediate donation
- Corydoras ornatus — likely to require an intermediate donation
- Corydoras orphnopterus — likely to require an intermediate donation
- Corydoras ortegai — likely to require an intermediate donation
- Corydoras osteocarus — likely to require an intermediate donation
- Corydoras ourastigma — likely to require an intermediate donation
- Corydoras oxyrhynchus — likely to require an intermediate donation
- Corydoras paleatus — likely to require an intermediate donation
- Corydoras pantanalensis — likely to require an intermediate donation
- Corydoras paragua — likely to require an intermediate donation
- Corydoras parallelus — likely to require an intermediate donation
- Corydoras pastazensis — likely to require an intermediate donation
- Corydoras paucerna — likely to require an intermediate donation
- Corydoras petracinii — likely to require an intermediate donation
- Corydoras pinheiroi — likely to require an intermediate donation
- Corydoras plutarcoi — likely to require an intermediate donation
- Corydoras polystictus — likely to require an intermediate donation
- Corydoras potaroensis — likely to require an intermediate donation
- Corydoras pulcher — likely to require an intermediate donation
- Corydoras punctatus — likely to require an intermediate donation
- Corydoras pygmaeus — likely to require an intermediate donation
- Corydoras rabauti — likely to require an intermediate donation
- Corydoras reticulatus — likely to require an intermediate donation
- Corydoras reynoldsi — likely to require an intermediate donation
- Corydoras rhabdotos — likely to require an intermediate donation
- Corydoras robineae — likely to require an intermediate donation
- Corydoras robustus — likely to require an intermediate donation
- Corydoras sanchesi — likely to require an intermediate donation
- Corydoras saramaccensis — likely to require an intermediate donation
- Corydoras sarareensis — likely to require an intermediate donation
- Corydoras schwartzi — likely to require an intermediate donation
- Corydoras semiaquilus — likely to require an intermediate donation
- Corydoras septemtrionalis — likely to require an intermediate donation
- Corydoras septentrionalis — likely to require an intermediate donation
- Corydoras serratus — likely to require an intermediate donation
- Corydoras seussi — likely to require an intermediate donation
- Corydoras similis — likely to require an intermediate donation
- Corydoras simulatus — likely to require an intermediate donation
- Corydoras sipaliwini — likely to require an intermediate donation
- Corydoras sodalis — likely to require an intermediate donation
- Corydoras solox — likely to require an intermediate donation
- Corydoras spectabilis — likely to require an intermediate donation
- Corydoras spilurus — likely to require an intermediate donation
- Corydoras steindachneri — likely to require an intermediate donation
- Corydoras stenocephalus — likely to require an intermediate donation
- Corydoras sterbai — likely to require an intermediate donation
- Corydoras surinamensis — likely to require an intermediate donation
- Corydoras sychri — likely to require an intermediate donation
- Corydoras treitlii — likely to require an intermediate donation
- Corydoras trilineatus — likely to require an intermediate donation
- Corydoras tukano — likely to require an intermediate donation
- Corydoras undulatus — likely to require an intermediate donation
- Corydoras urucu — likely to require an intermediate donation
- Corydoras virginiae — likely to require an intermediate donation
- Corydoras vittatus — likely to require an intermediate donation
- Corydoras weitzmani — likely to require an intermediate donation
- Corydoras xinguensis — likely to require an intermediate donation
- Corydoras zygatus — likely to require an intermediate donation
- Corymbophanes andersoni — likely to require an intermediate donation
- Corymbophanes kaiei — likely to require an intermediate donation
- Corynopoma riisei — likely to require an intermediate donation
- Coryogalops adamsoni — likely to require a low level of donation
- Coryogalops anomolus — likely to require a low level of donation
- Coryogalops bretti — likely to require a low level of donation
- Coryogalops bulejiensis — likely to require a low level of donation
- Coryogalops guttatus — likely to require a low level of donation
- Coryogalops monospilus — likely to require a low level of donation
- Coryogalops nanus — likely to require a low level of donation
- Coryogalops ocheticus — likely to require a low level of donation
- Coryogalops pseudomonospilus — likely to require a low level of donation
- Coryogalops sordida — likely to require a low level of donation
- Coryogalops tessellatus — likely to require a low level of donation
- Coryogalops william — likely to require a low level of donation
- Coryphaena equiselis — likely to require an intermediate donation
- Coryphaena haletus — likely to require an intermediate donation
- Coryphaena hippurus — likely to require an intermediate donation
- Coryphaena vexillifera — likely to require an intermediate donation
- Coryphaenoides acrolepis — likely to require a low level of donation
- Coryphaenoides affinis — likely to require an intermediate donation
- Coryphaenoides alateralis — likely to require a low level of donation
- Coryphaenoides altipennis — likely to require an intermediate donation
- Coryphaenoides anguliceps — likely to require an intermediate donation
- Coryphaenoides ariommus — likely to require an intermediate donation
- Coryphaenoides armatus — likely to require a low level of donation
- Coryphaenoides asper — likely to require an intermediate donation
- Coryphaenoides asprellus — likely to require an intermediate donation
- Coryphaenoides boops — likely to require an intermediate donation
- Coryphaenoides brevibarbis — likely to require an intermediate donation
- Coryphaenoides bucephalus — likely to require an intermediate donation
- Coryphaenoides bulbiceps — likely to require an intermediate donation
- Coryphaenoides camurus — likely to require an intermediate donation
- Coryphaenoides capito — likely to require an intermediate donation
- Coryphaenoides carapinus — likely to require an intermediate donation
- Coryphaenoides carminifer — likely to require an intermediate donation
- Coryphaenoides castaneus — likely to require an intermediate donation
- Coryphaenoides cinereus — likely to require a low level of donation
- Coryphaenoides delsolari — likely to require an intermediate donation
- Coryphaenoides delsoleri — likely to require an intermediate donation
- Coryphaenoides dossenus — likely to require an intermediate donation
- Coryphaenoides dubius — likely to require an intermediate donation
- Coryphaenoides fernandezianus — likely to require an intermediate donation
- Coryphaenoides ferrieri — likely to require a low level of donation
- Coryphaenoides filamentosus — likely to require an intermediate donation
- Coryphaenoides filicauda — likely to require an intermediate donation
- Coryphaenoides filifer — likely to require a low level of donation
- Coryphaenoides grahami — likely to require an intermediate donation
- Coryphaenoides guentheri — likely to require a low level of donation
- Coryphaenoides gypsochilus — likely to require an intermediate donation
- Coryphaenoides hextii — likely to require an intermediate donation
- Coryphaenoides hoskynii — likely to require an intermediate donation
- Coryphaenoides lecointei — likely to require a low level of donation
- Coryphaenoides leptolepis — likely to require a low level of donation
- Coryphaenoides liocephalus — likely to require an intermediate donation
- Coryphaenoides longicirrhus — likely to require an intermediate donation
- Coryphaenoides longifilis — likely to require a low level of donation
- Coryphaenoides macrolophus — likely to require an intermediate donation
- Coryphaenoides marginatus — likely to require a low level of donation
- Coryphaenoides marshalli — likely to require a low level of donation
- Coryphaenoides mcmillani — likely to require an intermediate donation
- Coryphaenoides mediterraneus — likely to require an intermediate donation
- Coryphaenoides mexicanus — likely to require an intermediate donation
- Coryphaenoides microps — likely to require an intermediate donation
- Coryphaenoides microstomus — likely to require an intermediate donation
- Coryphaenoides murrayi — likely to require an intermediate donation
- Coryphaenoides myersi — likely to require an intermediate donation
- Coryphaenoides nasutus — likely to require a low level of donation
- Coryphaenoides oreinos — likely to require an intermediate donation
- Coryphaenoides orthogrammus — likely to require an intermediate donation
- Coryphaenoides paramarshalli — likely to require a low level of donation
- Coryphaenoides profundicolus — likely to require a low level of donation
- Coryphaenoides rudis — likely to require an intermediate donation
- Coryphaenoides rupestris — likely to require a low level of donation
- Coryphaenoides semiscaber — likely to require an intermediate donation
- Coryphaenoides serrulatus — likely to require a low level of donation
- Coryphaenoides sibogae — likely to require an intermediate donation
- Coryphaenoides spinulosus — likely to require an intermediate donation
- Coryphaenoides striaturus — likely to require an intermediate donation
- Coryphaenoides subserrulatus — likely to require a low level of donation
- Coryphaenoides thelestomus — likely to require an intermediate donation
- Coryphaenoides tydemani — likely to require an intermediate donation
- Coryphaenoides woodmasoni — likely to require an intermediate donation
- Coryphaenoides yaquinae — likely to require a low level of donation
- Coryphaenoides zaniophorus — likely to require a low level of donation
- Coryphoblennius galerita — likely to require a low level of donation
- Coryphopterus alloides — likely to require a low level of donation
- Coryphopterus bol — likely to require a low level of donation
- Coryphopterus curasub — likely to require a low level of donation
- Coryphopterus dicrus — likely to require a low level of donation
- Coryphopterus eidolon — likely to require a low level of donation
- Coryphopterus glaucofraenum — likely to require a low level of donation
- Coryphopterus gracilis — likely to require a low level of donation
- Coryphopterus hyalinus — likely to require a low level of donation
- Coryphopterus kuna — likely to require a low level of donation
- Coryphopterus lipernes — likely to require a low level of donation
- Coryphopterus personatus — likely to require a low level of donation
- Coryphopterus punctipectophorus — likely to require a low level of donation
- Coryphopterus thrix — likely to require a low level of donation
- Coryphopterus tortugae — likely to require a low level of donation
- Coryphopterus urospilus — likely to require a low level of donation
- Coryphopterus venezuelae — likely to require a low level of donation
- Corythoichthys amplexus — likely to require an intermediate donation
- Corythoichthys benedetto — likely to require an intermediate donation
- Corythoichthys cayorum — likely to require an intermediate donation
- Corythoichthys elerae — likely to require an intermediate donation
- Corythoichthys flavofasciatus — likely to require an intermediate donation
- Corythoichthys haematopterus — likely to require an intermediate donation
- Corythoichthys insularis — likely to require an intermediate donation
- Corythoichthys intestinalis — likely to require an intermediate donation
- Corythoichthys isigakius — likely to require an intermediate donation
- Corythoichthys nigripectus — likely to require an intermediate donation
- Corythoichthys ocellatus — likely to require an intermediate donation
- Corythoichthys paxtoni — likely to require an intermediate donation
- Corythoichthys polynotatus — likely to require an intermediate donation
- Corythoichthys schultzi — likely to require an intermediate donation
- Cosmocampus albirostris — likely to require an intermediate donation
- Cosmocampus arctus — likely to require an intermediate donation
- Cosmocampus balli — likely to require an intermediate donation
- Cosmocampus banneri — likely to require an intermediate donation
- Cosmocampus brachycephalus — likely to require an intermediate donation
- Cosmocampus coccineus — likely to require an intermediate donation
- Cosmocampus darrosanus — likely to require an intermediate donation
- Cosmocampus elucens — likely to require an intermediate donation
- Cosmocampus heraldi — likely to require an intermediate donation
- Cosmocampus hildebrandi — likely to require an intermediate donation
- Cosmocampus howensis — likely to require an intermediate donation
- Cosmocampus investigatoris — likely to require an intermediate donation
- Cosmocampus maxweberi — likely to require an intermediate donation
- Cosmocampus profundus — likely to require an intermediate donation
- Cosmocampus retropinnis — likely to require an intermediate donation
- Cosmochilus cardinalis — likely to require an intermediate donation
- Cosmochilus falcifer — likely to require an intermediate donation
- Cosmochilus harmandi — likely to require an intermediate donation
- Cosmochilus nanlaensis — likely to require an intermediate donation
- Cottapistus cottoides — likely to require a low level of donation
- Cottapistus scorpio — likely to require a low level of donation
- Cottinella boulengeri — likely to require a low level of donation
- Cottiusculus gonez — likely to require a low level of donation
- Cottiusculus nihonkaiensis — likely to require a low level of donation
- Cottiusculus schmidti — likely to require a low level of donation
- Cottoclinus canops — likely to require a low level of donation
- Cottocomephorus alexandrae — likely to require a low level of donation
- Cottocomephorus grewingki — likely to require a low level of donation
- Cottocomephorus inermis — likely to require a low level of donation
- Cottoperca gobio — likely to require an intermediate donation
- Cottoperca trigloides — likely to require an intermediate donation
- Cottunculus granulosus — likely to require a low level of donation
- Cottunculus konstantinovi — likely to require a low level of donation
- Cottunculus microps — likely to require a low level of donation
- Cottunculus nudus — likely to require a low level of donation
- Cottunculus sadko — likely to require a low level of donation
- Cottunculus spinosus — likely to require a low level of donation
- Cottunculus thomsonii — likely to require a low level of donation
- Cottunculus tubulosus — likely to require a low level of donation
- Cottus alatus — likely to require a low level of donation
- Cottus aleuticus — likely to require a low level of donation
- Cottus altaicus — likely to require a low level of donation
- Cottus amblystomopsis — likely to require a low level of donation
- Cottus asper — likely to require a low level of donation
- Cottus asperrimus — likely to require a low level of donation
- Cottus aturi — likely to require a low level of donation
- Cottus baileyi — likely to require a low level of donation
- Cottus bairdii — likely to require a low level of donation
- Cottus beldingii — likely to require a low level of donation
- Cottus bendirei — likely to require a low level of donation
- Cottus caeruleomentum — likely to require a low level of donation
- Cottus carolinae — likely to require a low level of donation
- Cottus chattahoochee — likely to require a low level of donation
- Cottus cognatus — likely to require a low level of donation
- Cottus confusus — likely to require a low level of donation
- Cottus czerskii — likely to require a low level of donation
- Cottus duranii — likely to require a low level of donation
- Cottus dzungaricus — likely to require a low level of donation
- Cottus extensus — likely to require a low level of donation
- Cottus ferrugineus — likely to require a low level of donation
- Cottus girardi — likely to require a low level of donation
- Cottus gobio — likely to require a low level of donation
- Cottus gratzianowi — likely to require a low level of donation
- Cottus greenei — likely to require a low level of donation
- Cottus gulosus — likely to require a low level of donation
- Cottus hangiongensis — likely to require a low level of donation
- Cottus hispaniolensis — likely to require a low level of donation
- Cottus hubbsi — likely to require a low level of donation
- Cottus hypselurus — likely to require a low level of donation
- Cottus immaculatus — likely to require a low level of donation
- Cottus kajika — likely to require a low level of donation
- Cottus kanawhae — likely to require a low level of donation
- Cottus kazika — likely to require a low level of donation
- Cottus klamathensis — likely to require a low level of donation
- Cottus kolymensis — likely to require a low level of donation
- Cottus koreanus — likely to require a low level of donation
- Cottus koshewnikowi — likely to require a low level of donation
- Cottus leiopomus — likely to require a low level of donation
- Cottus marginatus — likely to require a low level of donation
- Cottus metae — likely to require a low level of donation
- Cottus microstomus — likely to require a low level of donation
- Cottus nasalis — likely to require a low level of donation
- Cottus nozawae — likely to require a low level of donation
- Cottus paulus — likely to require a low level of donation
- Cottus perifrenatum — likely to require a low level of donation
- Cottus perifretum — likely to require a low level of donation
- Cottus perplexus — likely to require a low level of donation
- Cottus petiti — likely to require a low level of donation
- Cottus pitensis — likely to require a low level of donation
- Cottus poecilopus — likely to require a low level of donation
- Cottus pollux — likely to require a low level of donation
- Cottus princeps — likely to require a low level of donation
- Cottus reinii — likely to require a low level of donation
- Cottus rhenanus — likely to require a low level of donation
- Cottus rhotheus — likely to require a low level of donation
- Cottus ricei — likely to require a low level of donation
- Cottus robinsi — likely to require a low level of donation
- Cottus rondeleti — likely to require a low level of donation
- Cottus sabaudicus — likely to require a low level of donation
- Cottus scaturigo — likely to require a low level of donation
- Cottus schitsuumsh — likely to require a low level of donation
- Cottus sibiricus — likely to require a low level of donation
- Cottus specus — likely to require a low level of donation
- Cottus spinulosus — likely to require a low level of donation
- Cottus szanaga — likely to require a low level of donation
- Cottus tallapoosae — likely to require a low level of donation
- Cottus tenuis — likely to require a low level of donation
- Cottus transsilvaniae — likely to require a low level of donation
- Cottus volki — likely to require a low level of donation
- Cotylopus acutipinnis — likely to require an intermediate donation
- Cotylopus rubripinnis — likely to require an intermediate donation
- Couesius plumbeus — likely to require an intermediate donation
- Cranoglanis bouderius — likely to require an intermediate donation
- Cranoglanis caolangensis — likely to require an intermediate donation
- Cranoglanis henrici — likely to require an intermediate donation
- Cranoglanis multiradiatus — likely to require an intermediate donation
- Cranoglanis songhongensis — likely to require an intermediate donation
- Crapatalus angusticeps — likely to require an intermediate donation
- Crapatalus munroi — likely to require an intermediate donation
- Crapatalus novaezelandiae — likely to require an intermediate donation
- Craterocephalus amniculus — likely to require a low level of donation
- Craterocephalus capreoli — likely to require an intermediate donation
- Craterocephalus centralis — likely to require a low level of donation
- Craterocephalus cuneiceps — likely to require a low level of donation
- Craterocephalus dalhousiensis — likely to require a low level of donation
- Craterocephalus eyresii — likely to require a low level of donation
- Craterocephalus fistularis — likely to require an intermediate donation
- Craterocephalus fluviatilis — likely to require a low level of donation
- Craterocephalus gloveri — likely to require a low level of donation
- Craterocephalus helenae — likely to require an intermediate donation
- Craterocephalus honoriae — likely to require an intermediate donation
- Craterocephalus kailolae — likely to require an intermediate donation
- Craterocephalus lacustris — likely to require an intermediate donation
- Craterocephalus laisapi — likely to require an intermediate donation
- Craterocephalus lentiginosus — likely to require a low level of donation
- Craterocephalus marianae — likely to require an intermediate donation
- Craterocephalus marjoriae — likely to require a low level of donation
- Craterocephalus mugiloides — likely to require an intermediate donation
- Craterocephalus munroi — likely to require an intermediate donation
- Craterocephalus nouhuysi — likely to require a low level of donation
- Craterocephalus pauciradiatus — likely to require an intermediate donation
- Craterocephalus pimatuae — likely to require an intermediate donation
- Craterocephalus randi — likely to require a low level of donation
- Craterocephalus stercusmuscarum — likely to require a low level of donation
- Craterocephalus stramineus — likely to require an intermediate donation
- Cratinus agassizii — likely to require an intermediate donation
- Creagrutus affinis — likely to require an intermediate donation
- Creagrutus amoenus — likely to require an intermediate donation
- Creagrutus anary — likely to require an intermediate donation
- Creagrutus atratus — likely to require an intermediate donation
- Creagrutus atrisignum — likely to require an intermediate donation
- Creagrutus barrigai — likely to require a low level of donation
- Creagrutus beni — likely to require a low level of donation
- Creagrutus bolivari — likely to require an intermediate donation
- Creagrutus brevipinnis — likely to require an intermediate donation
- Creagrutus britskii — likely to require a low level of donation
- Creagrutus calai — likely to require an intermediate donation
- Creagrutus caucanus — likely to require an intermediate donation
- Creagrutus changae — likely to require a low level of donation