Explain the features of fishes which help it to adapt to live in water.

The features which help fishes to adapt to live in water:

1) Streamlined, spindle-shaped body which is covered with scales. This offers the least resistance to flow of water and makes their swim easier.

2) Skeleton is made up of thin bones with the flexible backbone.

3) Flat fins and tails to help them swim, change direction and to keep the body balanced.

4) Gills are the organs for respiration in fishes. They are capable of absorbing oxygen from the water.