Crown Squirrelfish Care Guide
Sargocentron diadema · Saltwater Squirrelfish
What Crown Squirrelfish look like
The Crown Squirrelfish (Sargocentron diadema) exhibits a laterally compressed body with a maximum adult size of approximately 12 inches (30 cm). Its coloration is predominantly bright red to orange, which serves as both camouflage and warning coloration. The species possesses large, prominent eyes adapted for nocturnal vision, and its mouth is equipped with sharp, conical teeth, ideal for grasping prey. Notably, the dorsal fin is elongated and spiny, with 11-12 spines and 12-14 soft rays, providing a formidable defensive adaptation against predators. Sexual dimorphism is minimal, although males may exhibit slightly more vibrant coloration during breeding periods. The lateral line is well-developed, aiding in the detection of water movements and vibrations.
Behavior & temperament
Crown Squirrelfish are primarily nocturnal and exhibit a social hierarchy, often found in small groups or pairs during the day, hiding in crevices or under ledges to avoid predation. They are known to be territorial, particularly males during breeding seasons, displaying aggressive behaviors towards intruders. During the night, they become more active, foraging for food in the water column and on the substrate. Their breeding behavior involves elaborate courtship displays, where males may exhibit increased color intensity and fin displays to attract females. Overall, they are considered moderately aggressive, particularly when defending their territory.
Diet & feeding
Crown Squirrelfish are carnivorous, primarily feeding on small crustaceans, fish, and zooplankton in the wild. In captivity, they require a varied diet of high-quality marine pellets, frozen or live foods such as shrimp and small fish to maintain optimal health.
Behind the name
The genus name 'Sargocentron' derives from the Greek words 'sargo' meaning 'a type of fish' and 'kentron' meaning 'spine', while the species name 'diadema' comes from the Greek 'diadema', meaning 'crown', likely referring to the appearance of the dorsal fin.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Crown Squirrelfish?
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