Afrithelphusa is a genus of freshwater crabs in the family Potamonautidae. It contains four species, all of which were formerly listed as critically endangered by the International Union for Conservation of Nature (IUCN). They are all endemic to the Upper Guinean forests of Guinea and Sierra Leone.
Perbrinckia is a genus of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka, named after Per Brinck. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and rivers. It contains 14 species, most of which are included on the IUCN Red List as critically endangered species (CR) or vulnerable species (VU) because they are threatened by habitat loss; only one species is of least concern (LC).
Platythelphusa is a genus of freshwater crabs endemic to Lake Tanganyika. It has been placed in a number of families, including a monotypic family, Platythelphusidae, as well as Potamidae and its current position in the Potamonautidae, and has also been treated as a subgenus of Potamonautes. It forms a monophyletic group, possibly nested within the genus Potamonautes, which would therefore be paraphyletic. The genus is the only evolutionary radiation of crabs to have occurred in a freshwater lake, and it occurred recently, probably since the Pliocene. This parallels the better known radiation of cichlid fishes in Lake Tanganyika. Only one other species of freshwater crab is found in Lake Tanganyika, Potamonautes platynotus.
Potamonautes is a genus of African freshwater crabs in the family Potamonautidae. It is both the most widespread and most diverse genus of African freshwater crabs, including more than half the species of this continent. They are found in most freshwater habitats of the African mainland and some species are semi-terrestrial.
Potamonautes berardi is a species of freshwater crab in the family Potamonautidae. It is found in the Nile Basin in Egypt, Ethiopia, Sudan, Tanzania and Uganda. Its natural habitats are rivers and streams.
Potamonautes didieri is a species of crab in the family Potamonautidae. It is endemic to the Democratic Republic of the Congo, but has not been observed for 100 years; it is therefore listed as Data Deficient on the IUCN Red List.
Potamonautes gerdalensis is a species of crustacean in the family Potamonautidae. It is found in the Democratic Republic of the Congo, Kenya, Tanzania, and Uganda. Its natural habitats are rivers and freshwater lakes. It is threatened by habitat loss.
Potamonautes johnstoni is a species of freshwater crab in the family Potamonautidae. It is found in rivers in Kenya and Tanzania, with unconfirmed records from Malawi and the Democratic Republic of the Congo. The species' distribution includes Kilimanjaro, Nekona, Mrogoro and the Usambara Mountains.
Potamonautes lirrangensis, the Malawi blue crab, is a species of freshwater crab in the family Potamonautidae. This common and widespread species is found in Lake Malawi, Lake Kivu, the upper Congo River Basin and Malagarasi River in the Democratic Republic of the Congo, Malawi, Rwanda, and Tanzania. In the freshwater aquarium trade it is sometimes sold under the synonym Potamonautes orbitospinus.
Potamonautes loveni is a species of crab in the family Potamonautidae. It is found in Kenya and Uganda. Its natural habitat is rivers.
Potamonautes mutandensis is an endangered species of freshwater crab in the family Potamonautidae. It is found in Lake Mutanda and Lake Kivu in Uganda, Rwanda and DR Congo.
Potamonautes niloticus is a species of freshwater crab in the family Potamonautidae. It is found in the Nile Basin in Egypt, Ethiopia, Rwanda, Sudan, and Uganda. Numerous specimens of P. niloticus are known from Miocene deposits around Lake Albert.
Potamonautes obesus is a species of crab in the family Potamonautidae. It is found in Kenya, Malawi, Mozambique, Somalia, Tanzania, Zambia, and Zimbabwe. Its natural habitat is swamps.
Potamonautes pilosus is a species of crustacean in the family Potamonautidae. It is found in Kenya and Tanzania. Its natural habitat is rivers.
Potamonautes platycentron is a species of freshwater crab in the family Potamonautidae, which is endemic to Lake Chala in Kenya and Tanzania. It was originally described by Franz Martin Hilgendorf in 1897, as Telphusa platycentron.
Potamonautes platynotus is a species of freshwater crab which is endemic to Lake Tanganyika, where it is the only freshwater crab outside the genus Platythelphusa. Although primarily aquatic, P. platynotus is sometimes seen out of water, and can survive for many hours without water.
Potamonautes rukwanzi is a species of crustacean in the family Potamonautidae. It is endemic to Uganda. Its natural habitat is freshwater lakes.
Deckenia is a genus of freshwater crabs from East Africa, in the family Potamonautidae, or sometimes in a family of its own, Deckeniidae. The genus was named by Hilgendorf after Karl Klaus von der Decken who collected the first examples during his expeditions to Africa. Both species live in swamps from Eyl in Somalia to Dar es Salaam, Tanzania, both in coastal areas and further inland. A third species, Deckenia alluaudi, lives in the Seychelles, and has been transferred to a separate genus, Seychellum.
Potamonautes sidneyi is a species of freshwater crab in the family Potamonautidae. The common name is the Natal river crab or Sidney's river crab, although they may also be referred to as "river crabs", "fresh water crabs" or "land crabs".
Potamonautes lividus, also known as the blue river crab, is a species of decapod in the family Potamonautidae.
