; subclass Actinopterygii, order Perciformes)
A small family of mainly brackish-water fish that have a compressed, deep body, tapering sharply towards the tail, an oblique mouth, and a single dorsal fin. The anal fin is very long but low. Due to the steep head profile the male is able to carry the eggs delivered by the female. Kurtus gulliveri (nursery fish), 58 cm, will enter both freshwater and brackish-water regions of rivers in tropical Australia. There are about two species, found in the Indo-Pacific region.
Subjects: Zoology and Animal Sciences.