write the characteristics feature of class pisces
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Explanation:
They are the first jawed vertebrates and the study of fish is called Ichthyology. They are aquatic (may be fresh water or marine). Fish are cold blooded animals (poikilothermic). Their body is spindle shaped or streamlined to enable them to move rapidly in water.
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Explanation:
They are found in fresh,marine,and brackish water.
The body is usually streamlined.
Body is divided into head, trunk and tail.
They swim with the help of their tail.
Paired and unpaired fins represent the apendages.
The girls help in respiration.
The internal skeleton is bony or cartilaginous.
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