Fish anatomy

The fish, as well as any vertebrate animal, has skeleton, muscles, integument, organs of breath, allocation, duplication and feelings, digestive, blood and nervous systems.

Body of a fish is typically drawn as an elongated spindle, and in fact this is the most commonform, as it makes it easier to swim in open water.

The sum of the internal organs accounts for roughly 50 to 60% of the body weight in a classically shaped fish.