Common name: longspine squirrelfish

General information

The Squirrelfish, scientifically known as Holocentrus rufus, is a vibrant and active species popular among saltwater aquarium enthusiasts. Recognizable by its bright red coloration, large eyes, and long spines on the dorsal fin, this species is a nocturnal predator, often hiding during the day and becoming more active at night. The Squirrelfish is part of the Holocentridae family, which is known for its members' ability to produce sounds through their swim bladders to communicate or ward off predators.

Care

Squirrelfish are relatively hardy and can adapt to life in captivity if provided with the right conditions. They require a spacious tank with plenty of hiding places, as they are naturally shy and reclusive. Rockwork and caves are essential to mimic their natural habitat and provide a sense of security. They are carnivorous, feeding on a diet of meaty foods such as shrimp, squid, and various prepared frozen foods. Care should be taken to avoid housing them with small, peaceful fish, as they may become prey.

Reproduction

In the wild, Squirrelfish are known to spawn by releasing eggs and sperm into the water column, where fertilization occurs externally. However, breeding them in the home aquarium is quite challenging and rarely achieved by hobbyists. Their nocturnal spawning behavior and the need for precise environmental conditions make captive breeding a complex endeavor.

Habitat

The Longspine Squirrelfish is native to the Western Atlantic, from Florida and the Gulf of Mexico to Brazil, including the Caribbean Sea. They are typically found in coral reefs and rocky areas, often seeking refuge in crevices and overhangs during the day. In the wild, they can be found at depths ranging from shallow waters to over 180 feet deep.