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Fish

Fish. Miranda Miller Gabreal Preisendorfer Period 3. 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. Characteristics. Bony fish have bony skeletons.

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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/

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