FISH GALLERY

The term "fish" is most precisely used to describe any non-tetra pod chordate, (i.e., an animal with a backbone), that has gills throughout life and has limbs, if any, in the shape of fins.Unlike birds,mammals groupings, fish are not a single clade but a paraphyletic collection of taxa , including hag fishes,lampreys,sharks,lungfishes.

A typical fish is ectothermic, has a streamlined body that allows it to swim rapidly, extracts oxygen from the water using gills or an accessory breathing organ to enable it to breathe atmospheric oxygen, has two sets of paired fins, usually one or two (rarely three) dorsal fins, an anal fin, and a tail fin, has jaws, has skin that is usually covered with scales, and lays eggs that are fertilized internally or externally.

HERE ARE SOME PICTURES WITH THEIR TYPES