Potamogale velox is found in rivers within the main forest block from Nigeria to W Kenya. This species occurs in large, fast-flowing rivers, streams, sluggish coastal rivers and swamps. It retreats to burrows and crevices on the riferbank to rest and breed. (Kingdon, 1997)Ecological Notes:While this species has not been recorded in Tanzania, it has been observed in countries neighboring Tanzania's,northern and western borders and it is possible that Potamogale may be discovered within the country. Associated with aquatic habitats (including stagnant pools, slow and fast moving streams), this animal is a good swimmer, using its tail for locomotion through water. Potamogale eats crabs, frogs and fish, and lives in holes and tunnels in stream banks.