Distribution of dwarf snakehead channa gachua hamilton, 1822 (Teleostei, channidae) on brantas river basin, Indonesia

Channa gachua Hamilton, 1822, a native freshwater predator fish in family channidae, is known from South Asia to Western Indonesia archipelago. We provide a brief description of contemporary distribution records of this species in the Brantas river basin, one of the widest rivers basin in Java. The specimens of C. gachua were characterized as follows: dorsal fin rays 33-35; ventral fin rays 6; pectoral fin rays 15-16; anal fin rays 22-24. A description of detailed morphological characters of a live specimen are provided.