The ways that animals use to avoid becoming food at times seems endless. One type of fish is nearly symmetrical and capable of swimming backwards or forwards, keeping predators guessing which direction it will move next. It has a fin across its face that splits when the mouth opens.
Two types of fish are shaped like teardrops and school together, but one has a narrow mouth and the other a narrow tail, making them opposites and confusing predators which way they are facing.
Another group of fish have between two and five tails, depending on species. By using only one of the outer tails to swim and having different coloration on this part of the body, predators can be tricked into thinking that this part is the entire fish. When they reach for it, the fish can suddenly turn on its center of mass to move in unexpected ways. Alternately, the fish can make use of chromatophores to switch the colored part of its body to the other end, making it look as though the fish has mysteriously teleported, confusing predators to the point that they give up and hunt something less weird. The multitude of tails can also be used to grasp seaweed strands while resting.
The snaptail (seen above) has a large tail that looks like a gaping, toothy, mouth. It even has a false eye to complete the illusion. Unlike with Earth butterfly fish, this tail can actually snap shut on pursuers and draw blood.
Written by Daniel Noe, ChampionOfTheGalaxy.com