Cidurian basin

The bumblebee goby, Brachygobius doriae, is a small goby from western Borneo and the Natuna Islands, described from Sarawak. Among the more frequently traded members of the genus, it is often misidentified as B. nunus or B. xanthozona and is most easily confused with B. sabanus. It lives in fresh and brackish water in lowland coastal habitats such as mangrove swamps, estuaries and tidal streams. It is best kept in a species-specific set-up.

Hemibagrus planiceps is a bagrid catfish endemic to western Java, known only from seven river systems including the Citarum and Ciliwung. It occurs in the upper parts of river basins, in clear, fast-flowing water over rock or sand. It has been confused in the past with H. gracilis, H. velox and H. bongan, and the population once thought to inhabit northwestern Peninsular Malaysia has been described as H. divaricatus.