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What is a Fish?

What is a Fish?. Classification. Kingdom- Animalia Phylum- Chordata Sub Phylum- Vertebrat e Classes- Jawless , Cartilaginous & Bony Fishes. Characteristics of Fishes :. all Vertebrates all live in water obtain oxygen through gills have fins most are ectotherms

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What is a Fish?

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  1. What is a Fish?

  2. Classification • Kingdom- Animalia • Phylum- Chordata • Sub Phylum- Vertebrate • Classes- Jawless, Cartilaginous & Bony Fishes

  3. Characteristics of Fishes: • all Vertebrates • all live in water • obtain oxygen through gills • have fins • most are ectotherms • MOST have scales

  4. * Laminid- endothermic shark

  5. Let’s go to the Video! https://www.youtube.com/watch?v=IN7ISLbOhGo https://www.youtube.com/watch?v=Zoygy-8PTtU barreleye For the first time, a large Pacific barreleye fish - complete with transparent head - has been caught on film by scientists using remotely operated vehicles at the Monterey Bay Aquarium Research Institute. The deep-sea fish's tubular eyes pivot under a clear dome.

  6. 3 Major Groups of Fishes

  7. 1. JAWLESS FISH Jawless fish: Lampreys, Hagfish

  8. Types of JAWLESS FISH • Hagfish- Ocean scavengers, eat dead & decaying bodies • Lamprey- fresh and salt water, they are parasitic and prey on other fish. * Both have skeletons made of cartilage and sucker-like mouths.

  9. Characteristics of Jawless Fish • NO jaws • instead have mouths used for scraping, stabbing, and sucking food • NO scales

  10. https://www.youtube.com/watch?v=6DlWftios0s A Sliming Hagfish

  11. The Sea Lamprey

  12. Sea Lamprey Video Clip https://www.youtube.com/watch?v=-SYhOD1Yx10

  13. 2. Cartilaginous Fish: Sharks, Rays, & Skates

  14. Charateristics of Cartilaginous Fishes • Have Jaws • Have Scales- pointed & toothlike • Skeletons made of Cartilage • MOST have live Birth • Carnivores

  15. Sharks, Skates & Rays • Sharks andRays- can’t pump water over gills and must keep moving to breathe.

  16. Skates vs Rays • Skates - egg laying • Rays- Live Birth • Skates - larger dorsal fin • Rays- Larger than skates

  17. Shaaaaaaark!!!!!

  18. More Shark Attacks??????

  19. They get a Bad Rap :-(

  20. 3. Bony Fishes • Bony Fish:Salmon, Carp, Tuna • Over 20,000 different species • 95%of all fish species

  21. Characteristics of Bony Fish…. • Has jaws • Has scales • Pocket on each side of head to hold gills • Skeleton of Hard Bones • Swim Bladder • Fins

  22. Swim Bladder • internal balloon-like organ - filled with gas • helps fish stay stable at different depths of water using less energy

  23. Fish Respiration • Water flows over Gills as fish opens mouth and swims. • Oxygen diffuses from the water into the blood.

  24. Up Close and Personal

  25. Function of the Gills

  26. Types of Bony Fishes Ray Finned: • Most fish are this type • Fins are supported by bony structures called Rays. Lobe Finned: • Fins are long, fleshy, muscular, supported by central core of bones. • Thought to be ancestors of amphibians. • Examples are: Coelacanth, Lungfish

  27. https://www.youtube.com/watch?v=kZuVyPRhFME Bizarre Bony Fish

  28. Bizarre Fish the Sequel

  29. Fish Anatomy

  30. Fins

  31. Different Dorsal Fins

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