Common name: Lagoon shrimp-goby

General information

The Blue-striped Watchman Goby, Cryptocentrus cyanotaenia, is a small, colorful fish that is a favorite among reef aquarium enthusiasts. This species is known for its striking blue stripes that run the length of its body, contrasting against a pale yellow or white background. They are relatively peaceful and can be a great addition to a community tank.

Care

Blue-striped Watchman Gobies are hardy and suitable for beginners. They prefer a tank with plenty of live rock and a sandy substrate to burrow in. These gobies are known to form symbiotic relationships with pistol shrimps, creating shared burrows. They are omnivores and will accept a variety of foods including frozen and live meaty foods, as well as some plant-based foods.

Reproduction

In the aquarium, these gobies may pair up and spawn. The male typically guards the eggs until they hatch. Breeding them in captivity can be challenging but rewarding for experienced hobbyists.

Symbiosis

One of the most fascinating aspects of the Blue-striped Watchman Goby is its relationship with pistol shrimps, particularly the genus Alpheus. The shrimp maintains the burrow while the goby stands guard, warning the shrimp of approaching danger. This mutualistic relationship is a remarkable example of interspecies cooperation.

Habitat

Cryptocentrus cyanotaenia is found in the Western Pacific, from Indonesia to the Solomon Islands, and north to the Ryukyu Islands. They inhabit shallow lagoons and coastal reefs, often in association with shrimp burrows.