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Crown Squirrelfish
Squirrelfish

Crown Squirrelfish

Sargocentron diadema

A nocturnal, cave-dwelling squirrelfish in bright red crossed by thin white lines, sheltering under ledges by day and roaming the open sand and low reef for crustaceans after dark. It is hardy and peaceful toward fish and leaves coral alone, but it eats crustaceans — small ornamental shrimp are at risk — and carries a venomous preopercular spine, so handle it with care. Does best in a small group with plenty of hiding places.

Temperament
Peaceful
Max size
6.7"
Min tank
75 gal
Reef-safe
Reef safe
Diet
Carnivore
Zone
Caves, Rockwork, Sand bed
Best in a group of 2+.
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Tankmates

How Crown Squirrelfish gets on with the rest of the reef, checked pair by pair by the same engine as the live pre-flight.

Best kept apart

A real clash — aggression, predation or a same-genus fight.

Picasso TriggerfishPicasso Triggerfish (aggressive) is much larger than the peaceful Crown Squirrelfish and may harass it.Snowflake MoraySnowflake Moray has a big enough mouth to eat the much smaller Crown Squirrelfish.Zebra MorayZebra Moray has a big enough mouth to eat the much smaller Crown Squirrelfish.Chainlink MorayChainlink Moray has a big enough mouth to eat the much smaller Crown Squirrelfish.Rectangle TriggerfishRectangle Triggerfish (aggressive) is much larger than the peaceful Crown Squirrelfish and may harass it.Clown TriggerfishClown Triggerfish (aggressive) is much larger than the peaceful Crown Squirrelfish and may harass it.Miniata GrouperMiniata Grouper (aggressive) is much larger than the peaceful Crown Squirrelfish and may harass it.Panther GrouperPanther Grouper (aggressive) is much larger than the peaceful Crown Squirrelfish and may harass it.Skunk Cleaner ShrimpCrown Squirrelfish hunts ornamental shrimp — your Skunk Cleaner Shrimp is on the menu.Fire ShrimpCrown Squirrelfish hunts ornamental shrimp — your Fire Shrimp is on the menu.Peppermint ShrimpCrown Squirrelfish hunts ornamental shrimp — your Peppermint Shrimp is on the menu.Tiger Pistol ShrimpCrown Squirrelfish hunts ornamental shrimp — your Tiger Pistol Shrimp is on the menu.Randall's Pistol ShrimpCrown Squirrelfish hunts ornamental shrimp — your Randall's Pistol Shrimp is on the menu.