Typical of several species of gobies that live symbiotically with prawns. The goby rests just outside the prawn's burrow, and retreats into the burrow at the approach of danger. The goby and prawn may stay in reasonably close contact with each other when either leaves the burrow. The goby benefits from the shelter afforded by the burrow, and might also be "cleaned" by the prawn. The goby acts as a "watchman" for the prawn. The goby can signal the presence or absence of danger by flicking movements of its tail, and the prawn feels these signals through its antennae, which it places on the goby's tail. If the prawn cleans the goby of small particles attached to its body, then this may provide a useful food source for the prawn.
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