Fish Clipart

Fish belong to the superclass of aquatic animals. For all members of this class, a characteristic feature is the gill respiration during the entire period of life. They are common both in salt and fresh waters. It must be admitted that the structure of the fish body is the clearest example of a complete adaptation to the environment. Different species of fish adapted to certain conditions of the aquatic habitat, and this affected not only their appearance, but also the internal structure.

They can be found in very deep ocean basins, and in shallow streams. All fish are divided into 2 large groups. Bone fishes belong to the first group, this is a large part of all representatives of this class, and to the second - cartilaginous fish, the main representatives of which are sharks and rays.