Common name: Mud reef-goby

General information

The Painted Prawn-goby, Exyrias belissimus, is a small, colorful goby that is a delightful addition to any peaceful reef or fish-only aquarium. This species is known for its striking appearance, with a pale body adorned with red spots and a distinctive blue line running from the eye to the caudal fin. They are relatively rare in the aquarium trade but are highly sought after by enthusiasts for their beauty and interesting behavior.

Care

Painted Prawn-gobies are bottom dwellers and require an aquarium with a sandy substrate to mimic their natural environment. They are generally peaceful but can be territorial towards other bottom-dwelling fish. A tank with plenty of hiding spots and a secure lid is recommended, as they can be skilled jumpers. They thrive on a varied diet of meaty foods, including frozen mysis shrimp, brine shrimp, and finely chopped seafood.

Reproduction

In the wild, Painted Prawn-gobies are known to form monogamous pairs. Breeding in captivity is rare, but with the right conditions, it is possible. A stable, well-maintained aquarium with little to no disturbance can encourage spawning. The male typically guards the eggs until they hatch.

Symbiosis

One of the most fascinating aspects of Exyrias belissimus is its symbiotic relationship with pistol shrimp of the genus Alpheus. The goby acts as a lookout for the nearly blind shrimp, while the shrimp maintains the burrow that they share. This mutualistic relationship provides both species with protection and resources.

Habitat

Painted Prawn-gobies are found in the Indo-Pacific region, from the Red Sea to Samoa, and from the Izu Islands south to the Great Barrier Reef. They inhabit shallow coastal reefs and lagoons, often found in sandy areas near coral rubble or reef structures.