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Fish

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  1. Fish Miranda Miller GabrealPreisendorfer Period 3

  2. General Information • Fish are water dwelling creatures • Fish are vertebrates and breathe using gills • There are more than 24,000 species of fish • Fish first appeared 500 million years ago

  3. Characteristics • Bony fish have bony skeletons. • Rays and sharks have skeletons made of cartilage • All fish have a complete digestive tract that includes a mouth, anus, and a digestive system with specialized organs • Sexual reproduction, mostly external fertilization

  4. Bony Fish • Phylum Name-Osteichthyes • Have glands that secrete mucus to glide through the water • Types: Ray finned, Lob finned, and Lung fish • Have swim bladder to help them keep afloat

  5. Bony Fish con’t • Most are egg layers • Can become sexually mature at different ages depending on the species • Fertilization can be internal or external

  6. Sharks and Rays • Phylum name- Chondrichthyes • Sharks • Have rows of sensory organs running along each side of the body (lateral line) • Must swim constantly to avoid sinking (no swim bladder) • Swift swimmers

  7. Sharks and Rays con’t • Made of powerful muscle and cartilage • They digest food by using there teeth to tear and crush food • Rays • Scoop food up with there mouths along the ocean floor • Bottom dwellers

  8. Sharks and Rays con’t • They feed by using there jaws to crush mollusks • Tails are whip-like • Poison spines that function for ocean defense

  9. Examples of Fish • Clown fish • Tuna • Sting rays • Eels • Trout • Carp • salmon

  10. Work cited http://animals.nationalgeographic.com/animals http://www.buschgardens.org/infobooks/BonyFish/anatomy.html http://www.elasmodiver.com/