Phreatichthys andruzzii

Garra andruzzii, a species of cyprinid fish, formerly the only species of the genus Phreatichthys, and is endemic to Somalia. This cave-adapted fish is whitish and blind. It has no scales. It is considered to have evolved in the cave environment for some two million years. Its former generic name derives from the Greek words phreasatos for spring, and ichthys for fish. It grows to a maximum length of 6.2 cm (2.4 in).