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 simplicity.

HAWAIIAN RUBY CARDINALFISH

Apogon evermanni

ODDSCALE CARDINALFISH

IRIDESCENT CARDINALFISH

BANDFIN CARDINALFISH

SPOTTED CARDINALFISH

CLEAR CARDINALFISH

Apogonichthys perdix

WAIKIKI CARDINALFISH

Foa brachygramma 

BAY CARDINALFISH

BANGGAI CARDINALFISH

LONGSPINE CARDINALFISH

FIVE-LINE CARDINALFISH

YELLOW-EDGED CARDINALFISH

LESLIE'S CARDINALFISH

THREADFIN CARDINALFISH

SPOTNAPE CARDINALFISH

HALF-LINED CARDINALFISH   Nenbutsudai

CANDYSTRIPE CARDINALFISH   Kosuji-ishimochi

PLAIN CARDINALFISH

GUADALUPE CARDINALFISH

PINK CARDINALFISH

BARSPOT CARDINALFISH