Common name: Pacific Pistol Shrimp

General information

The Pacific Pistol Shrimp, Alpheus pacificus, is a fascinating species known for its asymmetrical claws, with one being significantly larger than the other. This larger claw can produce a loud snapping sound that is used for communication and defense. The snapping is so powerful it can stun prey or deter predators. These shrimps are often brightly colored, adding visual appeal to the aquarium.

Care

Pacific Pistol Shrimps are relatively hardy and can adapt to life in captivity. They require a tank with plenty of live rock and a sandy substrate to create burrows. They are generally peaceful but can be territorial with their own kind. It's important to provide a balanced diet that includes meaty foods and pellets.

Reproduction

In the aquarium, Alpheus pacificus may breed if a male and female pair is established. They engage in a courtship dance before the female lays eggs, which she carries until they hatch. The larvae go through several planktonic stages before settling to the bottom and developing into juveniles.

Symbiosis

One of the most interesting aspects of the Pacific Pistol Shrimp is its symbiotic relationship with certain species of gobies, particularly those in the genus Amblyeleotris or Cryptocentrus. The shrimp maintains a burrow that both the goby and shrimp inhabit. The goby acts as a lookout while the shrimp works on the burrow. This relationship provides the shrimp with a warning system against predators, while the goby gets a safe home.

Habitat

Alpheus pacificus is typically found in the Indo-Pacific region, from the Red Sea to the western Pacific. They inhabit coral reefs and sandy bottoms, often in association with their goby partners.