Bilateral Symmetry

This is a picture of a fish. Fish are examples of animals who are bilaterally symmetrical. Bilateral symmetry is having a mirror image along the middle line of an organism. Bilaterally symmetrical animals must have five features in order to be considered part of this group. Fish have these features which include having a top, bottom, identical left and right sides, a head, and a tail. Most animals are considered to be bilaterally symmetrical.