Botia udomritthiruji is a small freshwater fish in the loach family Botiidae native to the Great Tenasserim River Basin in south Burma. It reaches 13–15 cm in length, and the female's abdomen plumper

The Great Tenasserim River or the Tanintharyi River is a major river of southeastern Burma. It flows through the Tanintharyi Region, past the town of Tanintharyi, and enters the sea at Myeik. The rive