Common name: Pigmented cardinalfish

General information

The Blackbarred Shrimp Goby, scientifically known as Phaeoptyx pigmentaria, is a small and fascinating fish species popular among saltwater aquarium enthusiasts. This species is known for its distinctive coloration, featuring a pale body with dark brown to black vertical bars. It is a peaceful fish that can be a great addition to a community tank.

Care

Blackbarred Shrimp Gobies are relatively easy to care for but do require a well-established tank with a sandy substrate to mimic their natural environment. They are known to form symbiotic relationships with pistol shrimps, which can be an interesting behavior to observe in captivity. These gobies are carnivorous and should be fed a varied diet of meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood.

Reproduction

In the wild, Blackbarred Shrimp Gobies are known to spawn in burrows, where the male guards the eggs. In captivity, breeding can occur but is less common. If conditions are right, the male will guard the eggs within the burrow, which are typically attached to the walls or roof.

Symbiosis

One of the most intriguing aspects of the Blackbarred Shrimp Goby is its symbiotic relationship with pistol shrimps of the genus Alpheus. The shrimp maintains the burrow while the goby stands guard, warning the shrimp of approaching predators. This mutualistic relationship provides the shrimp with a lookout, and the goby with a safe home.

Habitat

Phaeoptyx pigmentaria is found in the Western Atlantic, from Florida and the Bahamas to Brazil. They inhabit sandy bottoms near coral reefs, often sharing burrows with pistol shrimps. In the aquarium, replicating this environment with plenty of sand and hiding places is essential for their well-being.