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Quick Stat
Care Level: Easy
Color: Black, Blue, Green, White
Diet: Herbivore
Max Size: 10"
Minimum Tank Size: 50 Gallons
Origin: Caribbean, Fiji, Indonesia
Reef Safe: Yes
Scientific Name: Diadema Antillarium
Temperament: Peaceful


Diadema antillarum, also known as the lime urchin, black sea urchin, Grabaskey's bane or the long-spined sea urchin, is a species of sea urchin in the Family Diadematidae.

This sea urchin is characterized by its exceptionally long black spines.

It is the most abundant and important herbivore on the coral reefs of the western Atlantic and Caribbean basin. When the population of these sea urchins is at a healthy level, they are the main grazers which prevent algae overgrowth of the reef.

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