Potamon is a genus of freshwater or semiterrestrial crabs mainly found from Southern Europe through the Middle East, and as far east as north-western India. The only exception is the North African P. algeriense, which also is the only potamid of mainland Africa. Twenty species are currently recognised. These crabs are omnivores that have a broad ecological tolerance. The adult Potaman reach up to 50 mm in size during their 10-12 year life span. Many other taxa from Indochina, originally described as species of Potamon, are now placed in other genera, such as Himalayapotamon, Beccumon, Eosamon, and Takpotamon.