Cardinalfishes are nocturnal carnivores with two dorsal fins, large eyes and mouths. Males incubate a cluster of eggs in their mouth at least until they hatch. Most species appear lighter and more iridescent at night as they feed upon zooplankton or small invertebrates. Rarely eaten since most are small.
Depending on the author, the genus Apogon may be replaced by a
subgeneric name. I have elected to use Apogon for