A fish which lives in mud (whether marine, estuarine, or freshwater); spec. (a) U.S. the black and silver killifish, Fundulus heteroclitus; (b) U.S.…

Australia. The local name for a fish of the genus Ceratodus.

Any of various chiefly freshwater fishes; (now) spec. the Asian seabass, Lates calcarifer.

A popular name for the Australian lungfish, Neoceratodus forsteri, belonging to the order Dipteriformes; also, a genus of fossil fish related to…