Ostorhinchus parvulus, also known as the redspot cardinalfish, is a marine fish in the family Apogonidae.

Redspot cardinalfish are semi-transparent with a large pink caudal spot.

[1] The redspot cardinalfish can be found in groups around current-prone rocky reefs, up to a depth of 12 meters (39 ft).

[1] Redspot cardinalfish are mouthbreeders that form distinct spawning pairs.

This order Gobiiformes (goby) related article is a stub.