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Home > Sale Items > Invertebrates
Pincushion Urchin - Group of 2
Lytechinus sp.
Pincushion Urchin - Group of 2
  Care Level
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Price Elsewhere: $19.99
Saltwaterfish Price: $13.99
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Tank Stats
Size: 2-3 inches
Care Level: Easy
Temperament: Peaceful
Reef Safe: Monitor with corals
Diet: Algae
Origin: Caribbean
Acclimation Time: 1+ Hours
Coral Safe:
Invertebrate Safe:
Minimum Tank Size:
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The Pincushion Urchin is round with very short spines and grows only up to 3 inches in diameter. It may carry shells, algae, bits of rubble on its back in order to shade or camouflage itself. The Pincushion Urchin is a grazer that roams around the tank searching for food and alga on the substrate and rockwork. Hence lots of live rock work is required in an aquarium, so that the live rocks encourage the growth of algae on itself. The Pincushion Urchin is not really considered reef safe, as it may damage or nip over the delicate corals by crawling over it. It can also fed by introducing attached algae sheets to a piece of rock with a clip or rubber band, if there is deficient in algal growth in the aquarium. Apart from this, the Pincushion Urchin can also be provided with dried seaweed for its continued good health. If its spines are poked in your hand while handling, it may cause some mild irritation, and therefore using gloves are recommended to avoid any accidents from the spines. Also, the Pincushion Urchin can act as a good water quality indicator, because it drops its spines if the water quality is not of a good quality level. It is not advisable to keep the Urchins along with puffer and trigger fishes as they can pick the spine off them and can break open their shell to eat them. But the Pincushion Urchin does well within a reef tank and can act as a method to wipe out a large algae problem. It doesn?t have any distinctive characteristic of female and male, thus breeding is quite impossible in captivity.
Entertaining to watch
Received in good shape. Drip acclimated them for an hour. They do a great job eating algae off my live rock. Quite entertaining to watch as they try and put shells on themselves. One of mine put 2 live bumble bee snails on there back and small crab. It was funny to see the crab trying to get loose. I had to rescue the snails and crab :-)
Reviewed by:  Ruben from Plano, TX. on 4/25/2013
The Pincushion Urchin is a small Urchin that is white and green in color with very sharp protruding spines -- like pins. In Nature, these spines serve as an excellent defense mechanism from predators. These Urchins are nocturnal and do most of their grazing at night. During the day they will usually stay stationary on the aquarium glass, or in hiding spots in rockwork. All Urchins like lots of rockwork that they can crawl and feed on. They are excellent algae eaters.Urchins belong to a Class known as Echinoidea, which consists of creatures that have a skeleton made of ten plates covered with spines. Urchins have mostly round bodies with protective spines on their upperside and tubular feet and a mouth on the underside. Artistotle once wrote of the five parts of the Urchin's mouth: "In reality the mouth-apparatus of the urchin is continuous from one end to the other, but to outward appearance it is not so, but looks like a horn lantern with the panes of horn left out." This holds true today as the mouth of the Urchin is referred to as "Aristotle's Lantern". The mouth of the Urchin is used to scrape algae from rockwork. The spines of the Urchin are a defense mechanism that are barbed like that of a fish hook and can inflict serious pain to the predator. These spines can either come to a sharp point or can be stubby and blunt.
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All sizes listed are only approximate representations. All pictures and descriptions are generalizations and cannot be exact representations.