Green Clown Goby

Also known commonly as the Broad-Barred Goby, G. histrio produces a toxin that deters predators by inhibiting their locomotion. At high enough concentrations, the toxin can cause a predator to lose equilibrium and tip over! G. histrio takes part in a mutualistic relationship with Acropora nasuta - when the coral is damaged by toxic Chlorodesmis algae, it produces a compound that attracts the fish, which eats the algae and becomes more toxic.