Bandfin Cardinalfish

Pristiapogon taeniopterus

Pristiapogon taeniopterus, commonly known as the Bandfin Cardinalfish, is a marine species belonging to the family Apogonidae. This fish can reach a length of up to 19.6 cm, though it is more commonly observed at smaller sizes. Divers may notice its silver sheen, particularly at night, which can help in distinguishing it from other cardinalfish. The Bandfin Cardinalfish is typically found in the Indo-Pacific region, including areas such as Micronesia, Polynesia, Melanesia, Madagascar, and Okinawa. It inhabits seaward reefs in rocky and coralline areas, often seen at depths ranging from 1 to 42 meters, though it is most commonly found between 1 and 9 meters. This species is primarily benthopelagic and can often be found near or on the reef, where it seeks shelter during the day. It is usually solitary or found in small groups. The Bandfin Cardinalfish feeds on free-swimming crustaceans, zoobenthos, and small fishes. During courtship and spawning, these fish exhibit distinct pairing behavior, and they are known to be mouthbrooders, a unique reproductive trait among fish. For divers, encountering a Bandfin Cardinalfish can be an interesting experience, especially when observing their behavior around the reef. They are harmless to humans and are also of commercial interest in fisheries and the aquarium trade. According to the IUCN Red List, the Bandfin Cardinalfish is currently categorized as Least Concern.