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mention some aquatic adaoption of superclass …

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mention some aquatic adaoption of superclass pisces
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Meghna Thapar 4 years, 1 month ago

Pisces In older classifications, a superclass containing the four classes of fish: the two extant classes Chondrichthyes (cartilaginous fish, e.g. sharks) and Osteichthyes (bony fish), the extinct class Placodermi, and also the most primitive of the vertebrates of the class Cephalaspidomorphi.

Characteristics of Pisces

  • They are found in fresh, marine, and brackish water.
  • The body is usually streamlined. ...
  • Their body is distributed into a head, trunk and tail.
  • They swim with the help of their tail.
  • Paired and unpaired fins represent the appendages.
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