Pistol shrimps amd gobies depend on each other for their shelter and protection and they have a beneficial relationship with each other. whats this symbiotic relation called

The symbiosis between a Pistol shrimps and gobies is called Mutual symbiosis. In this process both animals benefit. The shrimp creates and maintains a burrow for both the animals to live in, where as the fish offers protection from predators. When outside of their burrow the fish keeps a keen eye to spot any predator around and sends a warning to the goby through flicking of its tail in cases of a predator approaching.

there's the proffessional site that will you.