Long Spine Sea Urchins (Black), Diadema Setosum Size:Large Captive-bred fish are very hardy

Captive-bred fish are very hardy and more accustomed to conditions found in home aquariums

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proper iodine supplementation is necessary to promote molting and growth

Highly recommended

Z-Complete is an inorganic system that is better complemented with our inorganic elements and supplemented with our organic nutrients

Long Spine Sea Urchins (Black), Diadema Setosum Size:Large Captive-bred fish are very hardyThe Black Longspine Urchin, also known as Long spined Sea Urchin, has a body which is predominately black with a red eyespot in the center. The spines on these urchins are long, thin and completely black. They are a very delicate looking urchin, which are actually very capable of protecting itself. These urchins are excellent algae controllers for an aquarium housing aggressive fish. Provide an aquarium with ample hiding places and room to roam. Being