Sternoptychidae
Nutting's hatchet fish
Polyipnus nuttingi
FISH SPECIES
Discover fish with recorded distributions in Africa, across inland lakes, ancient river systems and coastal waters.
01 / NATURAL HISTORY
African ichthyofauna is famous for the rapid adaptive radiation of Rift Lake cichlids alongside archaic, relic lineages like lungfish and bichirs. These species demonstrate remarkable evolutionary resilience across dramatic tropical dry and wet cycles.
02 / LIFESTYLE
In the Great Rift Valley lakes (Victoria, Tanganyika, and Malawi), hundreds of cichlid species partition microscopic spatial zones—from rock-scraping mbuna to shell-dwelling dwarfs and scale-eating specialists. In contrast, riverine species navigating the Congo and Nile systems endure massive seasonal water level drops, with some surviving dry periods through aestivation or facultative air-breathing.
OBSERVATION INDEX
03 / SPECIES
Discover representative species illustrating the ecological diversity, morphologies and adaptations of this group.
Sternoptychidae
Polyipnus nuttingi
Cyprinidae
Enteromius nyanzae
Gobiidae
Feia nympha
Cyprinidae
Enteromius yongei
Cichlidae
Teleogramma obamaorum
Lutjanidae
Pristipomoides zonatus
Apogonidae
Apogon semiornatus
Cichlidae
Haplochromis obliquidens
Centrolophidae
Psenopsis obscura
Sphyraenidae
Sphyraena obtusata
Gobiidae
Gobius bontii
Carangidae
Decapterus macarellus
Balistidae
Canthidermis sufflamen
Exocoetidae
Exocoetus obtusirostris
Grammistidae
Grammistops ocellatus
Apogonidae
Apogonichthys ocellatus
Aetobatidae
Aetobatus ocellatus
Anabantidae
Ctenopoma muriei
Mastacembelidae
Mastacembelus vanderwaali
Apistidae
Apistus carinatus
Soleidae
Dicologlossa hexophthalma
Scorpaenidae
Pontinus kuhlii
Mormyridae
Marcusenius brucii
Mormyridae
Petrocephalus okavangensis
04 / FIELD NOTES
The Great Lakes of East Africa witnessed explosive evolutionary radiations where a few ancestral species diverged into hundreds of ecologically specialized species in remarkably short geologic time spans.
Certain species, like the African lungfish, can burrow into muddy riverbeds and secrete a protective mucous cocoon to aestivate for months until rains restore the waterway.