Black Longspine Urchin - Diadema setosum

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$36.99
SKU: 245639
Manufacturer: That Fish Place
MPN: 0724-urchin

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Details

The Black Longspine Urchin (Diadema setosum) is popular and has a very well-known appearance. It has long, thin black spines that extend from its body, and five rows of electric blue spots in asymmetrical design on the body. The anus of the urchin looks like an eye on the top of the body, with a bright orange ring in the center. While the body itself is usually only about 2 to 3 inches in diameter, the spines can make this urchin up to 12 inches across.

The spines on this urchin can break off easily and become embedded in the skin of a tankmate (or an aquarist) that bumps against them. Take care when maintaining the aquarium to avoid bumping against this urchin or its spines and do not place it in a small aquarium where it may come into contact with crowded tankmates. These urchins are mildly venomous. The venom is very mild but wounds from this urchin can still be painful as the spines themselves are needle-like and covered in bacteria so wounds can easily become infected quickly.

These urchins are grazers that will roam about the tank searching for food and algae on the substrate and rockwork. They will not actively eat corals, but some delicate corals may be damaged if the urchin crawls on top of them or knocks them over with its long spines. Urchins have also been known to eat coralline algae desirable to some aquarists.

Specifications

Specifications
MPN
0724-urchin
Manufacturer
That Fish Place
Common NameBlack Longspine Urchin
Scientific NameDiadema setosum
OriginIndo-Pacific
Reef SafeYes
Invert SafeYes
DifficultyEasy to Moderate
DietHerbivore
Specific Gravity Range1.022-1.026
pH Range8.0-8.4
Temperature Range75-82
VenomousYes, slightly
Internal Id
37824

State Restrictions
Alaska
Armed Forces Americas
Armed Forces Europe
Armed Forces Pacific
California
Hawaii
Puerto Rico

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