Common name: Signal goby

General information

The Y-Bar Shrimp Goby, scientifically known as Cryptocentrus insignitus, is a captivating species popular among aquarists for its symbiotic relationship with pistol shrimps and its unique appearance. These gobies are characterized by their sandy to pale body color with distinct Y-shaped bars and spots, which provide excellent camouflage against the substrate of their natural habitat.

Care

Y-Bar Shrimp Gobies are relatively hardy and suitable for most reef aquariums. They require a tank with a sandy bottom to allow for burrowing and a stable environment with well-established live rock. These gobies are peaceful and can be kept with a variety of other non-aggressive fish and invertebrates. They thrive on a diet of meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood.

Reproduction

In the aquarium, Cryptocentrus insignitus may breed if a compatible pair is established. They lay eggs in a burrow, which are then guarded by the male until hatching. Breeding these gobies in captivity can be challenging but rewarding for experienced hobbyists.

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 maintains and defends the shared burrow while the goby acts as a lookout. This mutualistic relationship provides the shrimp with a warning system against predators, while the goby gains a safe haven.

Habitat

Cryptocentrus insignitus is found in the Indo-Pacific region, from the eastern Indian Ocean to the western Pacific. They inhabit shallow, sandy areas near coral reefs, often sharing burrows with pistol shrimps. These gobies are typically found at depths ranging from 1 to 25 meters.