When cozying up with would-be predators, cleaner shrimp follow a dependable script
(PHYSorg.com Biology)

It`s a mystery how cleaner shrimp partner with would-be fish predators-sometimes even climbing in their mouths-without getting eaten. A new study reveals how the shrimp convinces fish not to eat them, and the fish conveys that it`s a friend and not a foe.