The Pencil Urchin Assorted Color Urchin has a black, brown color. The Pencil Urchin Assorted Color Urchin may grow to 2 (not counting spines) inches. Omnivore. It likes to eat Eats green filamentous algae, corraline algae and may mow through colonies of polyps and damage corals.. The Eucidaris species is generally peaceful toward other tankmates. Many consider the Eucidaris species a medium-maintenance specimen. Venomous, spines are slightlypoisonous Nocturnal algae eater. Provide places to hide. Ultra-sensitive to alkalinity changes, and will be venomous if it dies. Spines can emit toxic venom. Has been known to mow through corals. Be careful with copper-based medication and extreme nitrate levels. Keep water quality high (SG 1.023 - 1.025, pH 8.1 - 8.4, Temp. 72 - 78° F). The Pencil Urchin Assorted Color Urchin is commonly collected from the Caribbean. The Small size will come to you generally 3 inches; the medium generally 5 inches; the large generally 7 inches.  

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