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Receive 1 x
LARGE
🌈 Multicolored Urchin (
Tripneustes gratilla
)
Size: 3–4 inches (spines included)
Lifespan: 3–5 years
Behavior: Peaceful grazer; may carry shells, rocks, or algae on its back
Diet: Primarily algae; also eats detritus and leftover food
Tank Needs: 50+ gallons, mature tank with lots of live rock and algae
Water: 72–78°F, pH 8.1–8.4, salinity 1.023–1.026
Compatibility: Reef-safe with corals and fish; may knock over loose frags or rocks while moving
Fun Fact: Called “multicolor” because of its mix of black, purple, red, white, or blue spines, making it very eye-catching.
Receive 1 x
LARGE
🌈 Multicolored Urchin (
Tripneustes gratilla
)
Size: 3–4 inches (spines included)
Lifespan: 3–5 years
Behavior: Peaceful grazer; may carry shells, rocks, or algae on its back
Diet: Primarily algae; also eats detritus and leftover food
Tank Needs: 50+ gallons, mature tank with lots of live rock and algae
Water: 72–78°F, pH 8.1–8.4, salinity 1.023–1.026
Compatibility: Reef-safe with corals and fish; may knock over loose frags or rocks while moving
Fun Fact: Called “multicolor” because of its mix of black, purple, red, white, or blue spines, making it very eye-catching.