Fishes are one of the most wonderful and colorful creatures in the world..  |
| 6 spine butterfly fish |
Total of 31, 900 variety of fishes occur in world, which includes both salt and fresh water fishes.
They vary greatly in shapes, sizes, colors, food and living habitats.
Fishes are cold blooded creatures. They are either cartilaginuous or bony.
They bear gills for respiration, instead of lungs and are zoologically termed Pisces.
They vary greatly in shapes, sizes, colors, food and living habitats.
Fishes are cold blooded creatures. They are either cartilaginuous or bony.
They bear gills for respiration, instead of lungs and are zoologically termed Pisces.
Circulation occurs in the form of closed loop circulatory system and digestion through esophagus
Excretion from body occurs in the form of nitrogenous wastes(Ammonia)
Body is usually covered throughout with scales, but some do not have any and are called cat fishes.
Fish scales are of 5 kinds,including Cycloid, Ctenoid, cosmoid, placoid and ganoid.
Notes:
*Cold Blooded—which do not maintain their own body temperature, but body temperature varies according to the temperature of surrounding.
Notes:
*Cold Blooded—which do not maintain their own body temperature, but body temperature varies according to the temperature of surrounding.
*Cartilaginous—Made of the tissue that is found in our nose and ear.
http://en.wikipedia.org/wiki/Fish
http://allfishblog.blogspot.com/2011/03/scales-theclothing-of-fish.html
http://en.wikipedia.org/wiki/Fish
http://allfishblog.blogspot.com/2011/03/scales-theclothing-of-fish.html
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