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More than 1,300 described species of freshwater crabs are known, out of a total of 6,700 species of crabs across all environments. [1] The total number of species of freshwater crabs, including undescribed species, is thought to be up to 65% higher, potentially up to 2,155 species, although most of the additional species are currently unknown to science. [1]
Austrothelphusa transversa (von Martens, 1868), also known as the inland crab, freshwater crab, or tropical freshwater crab [3] is a species of freshwater crab endemic to Australia. [1] A. transversa is the most widely-dispersed species of its genus, as it has adaptations giving it a high tolerance to drought and arid conditions. [4]
Potamon fluviatile is a freshwater crab found in or near wooded streams, rivers and lakes in Southern Europe. It is an omnivore with broad ecological tolerances, and adults typically reach 50 mm (2 in) in size during their 10–12 year lifespan. They inhabit burrows and are aggressive, apparently outcompeting native crayfish.
The crab seen fending off the lions is a freshwater crab of the genus Potamonautes. There have been 26 species discovered in South Africa as of 2023, with new species discovered in recent years.
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 , [ 1 ] although they may also be referred to as "river crabs", "fresh water crabs" or "land crabs".
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.
Seychellum alluaudi is the only truly freshwater crab in the Seychelles; all the other true crabs in the islands have marine larvae. [3] It is common for freshwater crabs to have large eggs, [4] and this is also seen in Seychellum; its eggs are around 3.5 mm (0.14 in) in diameter, which Rathbun described as "very large".
Small, colorful, and a lover of habitats with sandy substrates, Red-clawed Crabs are some of the best aquarium pets that aren’t fish. Also known as Mangrove Crabs or Red Crabs, these clawed ...