This guide is based on the book Fishes of North Selangor Peat Swamp Forest https://www.mybis.gov.my/pb/3543
The croaking gourami (Trichopsis vittata) is a species of small freshwater labyrinth fish of the gourami family. They are native to still waters in Southeast Asia and are distributed worldwide via the aquarium trade. Croaking gouramis are capable of producing a "croaking" noise using their pectoral fins.