Slate Pencil Urchin cleaner building block - 1 Urchin Emerald Crab Colors will vary according to

Colors will vary according to the light used in your aquarium

It prefers a strong current and will require a large aquarium with large amounts of rock work where it can hide

The individual Gorgonia will be 5 to 10 inches tall branches

The Blue Tang boasts a vibrant electric blue body dressed with bold black markings

The Nassarius Snail is extremely difficult to breed in captivity

Slate Pencil Urchin cleaner building block - 1 Urchin Emerald Crab Colors will vary according toCombine crabs, snails, shrimp, star fish, sea cucumbers and urchins with a nudibranch to build an efficient cleaning crew. See the table for recommended packages for each tank volume. See compatibility chart for participant interaction in your aquarium. The Pencil Urchin is an interesting addition to your aquarium that will help keep your tank clean at night. It requires a minimum tank volume of 30 gallons and is not reef compatible. Category