Some blennies are among the best make-believe artists in the fish world. They look like another —harmless— species, but this is just a trick to get close enough to other fish to bite a chunk out of them.
In the struggle to eat and avoid being eaten, fish (including blennies) have evolved a vast range of survival techniques. One is the art of mimicry— that is, pretending to be something that you are not. The sabre-toothed blenny, for example, looks almost identical to the cleaner wrasse. The cleaner wrasse is
