Hypseleotris, or carp gudgeons, are a genus of small fresh and brackish water fishes in the family Eleotridae. Fish of this genus are found in rivers and estuaries connected to the tropical Indo-Pacific region. They are sometimes seen in the aquarium trade; especially H. compressa.

Hypseleotris species are opportunistic predators, feeding on zooplankton, small crustaceans and other benthic invertebrates. Mostly pelagic, Hypseleotris often aggregate in small schools but become territorial during breeding, which typically occurs in spring.

...