The Banggai cardinalfish is a paternal mouthbrooder. The scales of the belted cardinalfish have a toothed margin and are shed periodically. Pajama cardinalfish display a rainbow of colors. Belted cardinalfish reach a maximum length of . It can be kept with other nocturnal fish, including pinecone fish, glasseye squirrelfish, and cardinalfish. The bigtooth cardinalfish is native to the tropical Atlantic Ocean. The bigtooth cardinalfish grows to a maximum length of about . In the Banggai cardinalfish, courtship behavior is usually initiated by the female. The Banggai cardinalfish is a popular aquarium fish among fishkeepers. The male pajama cardinalfish incubates the eggs in his mouth until they hatch. The Banggai cardinalfish ("Pterapogon kauderni") is a small tropical cardinalfish in the family Apogonidae. The Banggai cardinalfish is the only member of its family that is diurnal. The twospot cardinalfish ("Apogon pseudomaculatus") is a species of fish in the family Apogonidae. Juvenile Banggai cardinalfish do not go through any pelagic larval phase. The bigtooth cardinalfish is nocturnal, concealing itself in crevices and caves during the day.