Common name: Emerald coral goby

General information

The Green Clown Goby, Paragobiodon xanthosoma, is a small, peaceful fish that is well-suited for nano and larger reef aquariums. Its vibrant green coloration and quirky behavior make it a favorite among aquarists. This species is known for its small size, typically reaching only about 3-4 centimeters in length.

Care

Green Clown Gobies are hardy and can adapt to a variety of tank conditions, but they thrive in well-established aquariums with plenty of live rock for hiding and grazing. They are not aggressive eaters, so care should be taken to ensure they receive enough food when housed with faster, more aggressive fish. A varied diet of small meaty foods and marine pellets or flakes is recommended.

Reproduction

In the aquarium, Green Clown Gobies may spawn if kept in a pair or small group, laying their eggs on the underside of coral branches or on the aquarium glass. The male typically guards the eggs until they hatch.

Symbiosis

An interesting aspect of the Green Clown Goby's behavior is its relationship with certain stony corals, particularly Acropora species. They often rest and seek shelter among the branches of these corals, and in some cases, may nip at the coral polyps for food, which can be detrimental to the coral's health if not kept in check.

Habitat

Paragobiodon xanthosoma is native to the Western Pacific, where it is commonly found in shallow coral reefs, often associated with branching corals like Acropora. They prefer areas with moderate to strong water flow and plenty of hiding spots.