  The Sea Cucumber, also known as the Edible Sea Cucumber, was first described by scientists in 1830. It has a long, pink to reddish-brown body, which is usually darker dorsally, often green or black. It does well in a large aquarium if provided with ample room to roam. Generally, for every 3 inches of sea cucumber there should be 20 gallons of water. It prefers a thick sandy substrate so it can scour through the sand for organic foods. The Sea Cucumber will spend most of its time in the open, though it may carry a thin film of sand over its body. It needs to be kept with peaceful tank mates. It is sensitive to high levels of copper-based medications and will not tolerate high nitrate levels. While it does not have the toxic tubules of Culvier that many cucumbers have, if frightened, it might disgorge its interal organs into the tank, which may be toxic to fish. In the wild, these organs often regenerate, but rarely in an aquarium setting. It is extremely difficult to breed in an aquarium, and has no distinguishing characteristics to help differentiate it from its mate. If not overstocked, the Sea Cucumber does not need supplemental feeding. | Sea Cucumber | | (Holothuria sp.) | | |
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