Sargocentron diadema

Datasheet

General Description

The Crown Squirrelfish, scientifically known as Sargocentron diadema, belongs to the Holocentridae family. It is native to the Indo-Pacific region, ranging from the Red Sea and East Africa to the Hawaiian and Pitcairn islands. This species can reach a maximum size of 17.0cm and is characterized by its striking coloration and nocturnal behavior.

Aquarium Suitability

Crown Squirrelfish are considered suitable for aquariums with caution. They are generally peaceful but can show aggression towards similar species if not provided with enough space. It is important to note that they can be a threat to small fish and small crustaceans, such as small shrimp. When handling these fish, care should be taken to avoid damaging their large eyes, as they are sensitive to injuries.

Demands, Care, and Hardiness

This species is classified as hardy, making it relatively resilient to fluctuations in water conditions. Crown Squirrelfish prefer dimly lit tanks with overhangs and caves to mimic their natural habitat. They are known to be initially shy when introduced to a new environment but can become more active as they acclimatize. To ensure their well-being, it is recommended to provide a tank of at least 600 liters in size.

Reef Suitability

Crown Squirrelfish are deemed reef safe with caution, as they may exhibit territorial behavior towards other tank inhabitants. It is essential to monitor their interactions with corals and reef structures to prevent any potential aggression.

Aquarium Setup

When setting up an aquarium for Crown Squirrelfish, it is vital to include ample hiding spots such as caves and overhangs. Maintaining stable water conditions with a pH range of 8.1-8.4, a temperature between 22.2-25.6°C, and a specific gravity of 1.020-1.025 is crucial for their well-being. Additionally, providing a varied diet consisting of larger and small crustaceans is recommended to meet their nutritional needs.

Behaviour

Crown Squirrelfish are known for their secretive nature, often hiding among rocks during the day and becoming more active at night. They may display territorial behavior, especially towards conspecifics, and should be observed closely if kept with other fish of a similar size or appearance.

Feeding and Diet

In captivity, these fish are known to feed on larger crustaceans like shrimp and crabs, as well as smaller crustaceans such as krill, mysis, and artemia. Offering a balanced diet that replicates their natural prey items is essential for their health and vitality.

Dimorphism and Captive Reproduction

Information on dimorphism and captive reproduction of Crown Squirrelfish is limited and may vary among individual specimens. Observing their behavior in a well-maintained aquarium environment can provide insights into their reproductive habits and potential differences between genders.

Habitat and Distribution

Crown Squirrelfish are commonly found in the shallow waters of the tropical Indo-Pacific region, ranging from the Red Sea and East Africa to Australia and the Pacific islands. They prefer rocky reefs and areas with ample hiding spots to seek refuge during the day and become active predators at night.