Retropinnidae is a
family of
bony fishes that contains the
Southern Hemisphere smelts and graylings. They are closely related to the northern smelts (
Osmeridae), which they greatly resemble, but not to the northern graylings (
Thymallus). Species from this family are only found in southeastern
Australia and
New Zealand. Although a few species are partly
marine, most inhabit
fresh or
brackish water.