Candy Stripe Pistol Shrimp
The name Symbiotic Shrimp comes from the equally beneficial relationship the Pistol Shrimp has with gobies (e.g. Cryptocentrus). The goby, with better eyesight, warns the shrimp of predators. The shrimp share its food with the goby.
The Candy Stripe Pistol Shrimp and its cousins all have a unique left pincher. The pincher is modified to produce a loud sound and stream of water whenever it is opened or closed. In the aquarium, it sounds like a loud popping noise.