Common name: Y-bar shrimp goby

General information

The Y-Bar Shrimp Goby, scientifically known as Cryptocentrus fasciatus, is a captivating species popular among aquarists for its symbiotic relationship with pistol shrimps and its peaceful demeanor. This goby is characterized by its tan body with a distinctive Y-shaped bar pattern and yellow lines running along its body, which can add a touch of elegance to any reef tank.

Care

Y-Bar Shrimp Gobies are relatively easy to care for but do require a sandy substrate to thrive, as they enjoy burrowing and creating tunnels. They are best kept in tanks that are at least 30 gallons to provide ample space for their burrowing behavior. These gobies are not aggressive and can be kept with a variety of other peaceful fish and invertebrates.

Reproduction

In the aquarium, Cryptocentrus fasciatus may breed if a pair is established. They lay their eggs in the burrows, and the male is known to guard the eggs until they hatch. However, breeding them in captivity can be challenging and is not commonly reported.

Symbiosis

One of the most fascinating aspects of the Y-Bar Shrimp Goby is its symbiotic relationship with pistol shrimps of the genus Alpheus. The shrimp and goby share a burrow, which the shrimp maintains while the goby stands guard. The shrimp, having poor eyesight, relies on the goby for warning signals of approaching danger. In return, the goby benefits from the secure home provided by the shrimp's digging efforts.

Habitat

Cryptocentrus fasciatus is found in the Indo-Pacific region, from the eastern coast of Africa to the western Pacific. They inhabit shallow lagoons and reef flats, often associating with sandy bottoms where they can easily dig and maintain their burrows.