http://en.wikipedia.org/wiki/Anatomy
The heart has two chambers and pumps the blood through the respiratory surfaces of the gills and on round the body in a single circulatory loop.The eyes are adapted for seeing underwater and have only local vision. There is an inner ear but no external or middle ear. Low frequency vibrations are detected by the lateral line system of sense organs that run along the length of the sides of fish, and these respond to nearby movements and to changes in water pressure.
The heart has two chambers and pumps the blood through the respiratory surfaces of the gills and on round the body in a single circulatory loop.The eyes are adapted for seeing underwater and have only local vision. There is an inner ear but no external or middle ear. Low frequency vibrations are detected by the lateral line system of sense organs that run along the length of the sides of fish, and these respond to nearby movements and to changes in water pressure.
No comments:
Post a Comment