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Fish Anatomy & Taxonomy

Fish Anatomy & Taxonomy. Orientation. Dorsal Fin. Large fin on back that varies in size, shape and position Stabilizes fish . Pectoral & Pelvic Fin. Pectoral Fins: Located on side of body Used for steering & locomotion Pelvic Fins: Located on belly or under pectoral fins

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Fish Anatomy & Taxonomy

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  1. Fish Anatomy & Taxonomy

  2. Orientation

  3. Dorsal Fin • Large fin on back that varies in size, shape and position • Stabilizes fish

  4. Pectoral & Pelvic Fin • Pectoral Fins: Located on side of body • Used for steering & locomotion • Pelvic Fins: Located on belly or under pectoral fins • Function in stabilizing & braking

  5. Anal & Adipose Fin • Anal Fin: Located on ventral side (underside) behind the pelvic fins • Adipose Fin: Small fin located between the dorsal and caudal fin

  6. Caudal Fin • Caudal Fin: Tail fin that varies in shape, affecting the fish’s speed and buoyancy • Used for propulsion

  7. Mouth • Mouth: The size and shape of a fish’s mouth indicates what they feed upon

  8. Barbels • Barbels: “Whiskers” near the mouth • Used by bottom feeding fish to sense food

  9. Some Hints • Body more than 5x as long as broad • Hinge of mouth • Scales

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