Genus Atherinosoma

An endemic Australian genus with two species, both found in southern Australian waters.

Key to species of Atherinosoma 

1a. Two (very rarely three) scale rows above and two to three scales rows below mid-lateral stripe at origin of first dorsal fin (usually two rows above and two below); greatest body depth 11—20% SL but usually nearer 14%; no distinct oval patches of teeth on tongue.......................................................................................Atherinosoma elongatum

1b. Three scales rows above and three scale rows below midlateral stripe at origin of first dorsal fin; greatest body depth 12—22% SL but usually about 16%; teeth, when present on tongue, in small oval patches..................................................................................................................................................Atherinosoma microstoma