Common name: Blacktail Cardinalfish

General information

The Blacktail Cardinalfish, scientifically known as Ostorhinchus melanoproctus, is a small and peaceful marine fish that is well-suited for community aquariums. This species is appreciated for its striking appearance, with a silver body, a distinctive black spot at the base of the tail, and subtle orange to red accents on the fins and eyes.

Care

Blacktail Cardinalfish are relatively easy to care for and can be a good choice for both beginner and advanced aquarists. They thrive in a well-established aquarium with stable water conditions and plenty of hiding places among live rock or coral. They are nocturnal and prefer dim lighting during the day. A varied diet of small meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood will help maintain their health and coloration.

Reproduction

In the wild, Blacktail Cardinalfish are mouthbrooders, with the male carrying the eggs in his mouth until they hatch. This fascinating reproductive behavior can also be observed in the home aquarium, making them an interesting species for aquarists interested in breeding marine fish.

Habitat

Ostorhinchus melanoproctus is found in the Western Pacific, from Indonesia to the Great Barrier Reef and west to the Solomon Islands. They typically inhabit coral reefs and lagoons, often sheltering in caves or overhangs during the day and emerging at night to feed.