Sargocentron xantherythrum

Datasheet

General Description

The Hawaiian squirrelfish (Sargocentron xantherythrum) belongs to the Holocentridae family and is commonly known for its striking red and white coloration. This species, native to the Eastern Central Pacific around the Hawaiian Islands and Johnston Atoll, possesses distinctive spikes on its head and gills, which can easily get entangled in fishnets, making them challenging to catch without causing harm.

Aquarium Suitability

Considered suitable for aquariums, Hawaiian squirrelfish can be aggressive if not provided with enough space. They are nocturnal creatures, most active when the lights are dimmed or off, and tend to be initially shy when introduced to a new tank. It is recommended to acclimatize them to faint light initially and gradually increase brightness. These fish thrive in settings with overhangs and caves and can coexist with their own species if introduced simultaneously.

Demands, Care, and Hardiness

Hawaiian squirrelfish are hardy fish that require a minimum tank size of 600 liters. They prefer water conditions with a pH of 8.1-8.4, a temperature range of 22.2-25.6°C, and a specific gravity of 1.020-1.025. They feed on a varied diet that includes larger crustaceans like shrimp and crabs, as well as smaller crustaceans such as krill, mysis, and artemia.

Reef Suitability

Reef safe with caution, these squirrelfish may pose a threat to small crustaceans like shrimp within a reef environment due to their predatory nature. They are generally not aggressive towards other aquarium inhabitants but may consume very small fish and invertebrates.

Aquarium Setup

To create an ideal habitat for Hawaiian squirrelfish, aquarists should provide dim lighting initially, ample hiding spots with overhangs and caves, and sufficient space to prevent territorial aggression. Avoid using fishnets when handling these fish to prevent injury to their delicate eyes and skin.

Behaviour

While Hawaiian squirrelfish are not inherently aggressive, they may exhibit territorial behavior if space is limited. They can be kept in small groups but may engage in minor skirmishes among themselves. These fish are most active during the night and may require time to adjust to feeding during daylight hours.

Feeding and Diet

These nocturnal feeders primarily consume larger crustaceans like shrimp and crabs, along with smaller crustaceans such as krill, mysis, and artemia. It is advisable to offer live food initially to entice them to eat, especially if they are reluctant to feed during the day.

Dimorphism and Captive Reproduction

There is no specific information available regarding dimorphism and captive reproduction of Hawaiian squirrelfish in the provided details.

Habitat and Distribution

Hawaiian squirrelfish are predominantly found in the waters of the Hawaiian Islands and Johnston Atoll in the Eastern Central Pacific. They gravitate towards areas with rocky structures, overhangs, and caves, where they can seek shelter and forage for food in their natural habitat.