The trout cod or bluenose cod, is a large predatory freshwater fish of the genus Maccullochella and the family Percichthyidae, closely related to the Murray cod. It was originally widespread in the south-east corner of the Murray-Darling river system in Australia, but is now an endangered species.

The members of the family Percichthyidae are known as the temperate perches. They belong to the order Perciformes, the perch-like fishes.