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Fish

Fish. General Characteristics. Oldest group of vertebrates Fish are ectotherms or cold-blooded Breathe through gills They are broken into four groups Lampreys Hagfish Cartilaginous Fish Bony Fish. Lampreys and Hagfish. A jawless fish Do not have scales Look different than other fish

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Fish

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  1. Fish

  2. General Characteristics • Oldest group of vertebrates • Fish are ectotherms or cold-blooded • Breathe through gills • They are broken into four groups • Lampreys • Hagfish • Cartilaginous Fish • Bony Fish

  3. Lampreys and Hagfish • A jawless fish • Do not have scales • Look different than other fish • Appear snake-like

  4. Pictures of Lampreys and Hagfish

  5. Cartilaginous Fish • Have skeletons made of cartilage. • Have specialized fins for movement. • Include: sharks, rays, and skates

  6. Pictures of Cartilaginous Fish

  7. Bony Fish • Have skeletons made of bone. • Body covered in scales for protection • Have a swim bladder to help control the depth they swim at. • Have different fins used for steering and balance in the water. • Include: tuna, salmon, bass, trout, and many more.

  8. Pictures of Bony Fish

  9. 10-2 BAQs • How would the body temperature of a fish change if the water temperature rose? • The fish’s body temperature would rise. • What organ do fish use to breathe? • Fish use gills to breathe underwater. • What are the four classes of fish? • The four classes of fish are lampreys, hagfish, cartilaginous fish, and bony fish.

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