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Key terms: fin fish jaws tail scales rays arches bony spines vertebral gill covered shark lobe keel caudal fin modified paired fused vertebrae tube soft swimming dorsal fin spiny anatomy anterior homology extend oxygen structures pectoral fins some fish operculum many fish ventral lateral catfish assists pharyngeal tetrapod tail fin may vertebral arch spinal cord flying fish pelvic fins caudal peduncle some species cartilagenous cycloid scales Search external links cited by footnotes on Wikipedia page Fish anatomy: |
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