Respuesta :

Explanation:

Bases on the structure of their mouth and the type of the skeleton, scientists have divided the fish into 3 main categories:

  1. Jawless Fish
  2. Cartilaginous Fish
  3. Bony Fish

Lampreys:

  • Lampreys belong to the first category i.e. Jawless Fish.
  • Lampryes are mostly parasites and feed on other fish by sucking their blood and tissues using their suction like mouth structures.
  • Their body is not covered with scales and they do not have a pair of fins.

Skates:

  • Skates belongs to the second category i.e. Cartilaginous Fishes.
  • They have jaws and pair of fine unlike Lampreys (Jawless Fish)
  • Their bodies are covered with scales.
  • These are carnivores.
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