Fish External Anatomy

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Across
  1. 3. of, on, or relating to the upper side or back
  2. 7. further back in position; of or nearer the rear
Down
  1. 1. of, on, or relating to the underside
  2. 2. technical term for gill cover
  3. 4. near the front, especially situated in the front
  4. 5. branch of science dealing with bodily structure
  5. 6. bladder a gas-filled sac present in the body of many bony fishes