Long Spine Urchin Diadema setosum
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Our facinating urchin will make an interesting addition to your saltwater tank especially a nano tank. They are about 1 inch in diameter. It has very long sharp spines. The Longspine Urchin live in the rocks during the day and are active at night. They eat and do well on standard frozen fish foods. They require typical saltwater aquarium salinity and temperature.