These fish are very easy to care for and like to hover in place. They will pair up and mate in the home aquarium. They should be provided ledges that they can hover underneath.The family of Cardinalfish are a group of relatively small fish that like to inhabit reef overhangs and crevices. These fish are nocturnal and do most of their feeding at nightime. They usually have large eyes, two separated dorsal fins, and short snouts. Cardinals are known for being mouth brooders where eggs are incubated inside the mouth of the fish.