1 / 23

Fish

Fish. Classification. Kingdom- Animalia Phylum- Chordata Sub Phylum- Vertebrata Classes- Agnatha, Chondrichthyes, Osteichthyes. Agnatha. Jawless fish: Lampreys, Hagfish. Types of Agnathans. Hagfish - Ocean scavengers, not much is known about them.

Download Presentation

Fish

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Fish

  2. Classification • Kingdom- Animalia • Phylum- Chordata • Sub Phylum- Vertebrata • Classes- Agnatha, Chondrichthyes, Osteichthyes

  3. Agnatha Jawless fish: Lampreys, Hagfish

  4. Types of Agnathans • Hagfish- Ocean scavengers, not much is known about them. • Lamprey- fresh and salt water, they are parasitic and prey on other fish. * Both have cartilagenous skeletons and sucker-like mouths.

  5. A Sliming Hagfish

  6. Lamprey

  7. Chondricthyes Cartilagenous Fish: Shark, Ray

  8. Chondrichthyes • Sharks are adapted for a predatory lifestyle. • Cartilage skeletons, stiff pectoral fins (speed). • No operculum, must keep moving to breathe. • Have live births. • Special scales feel like sandpaper. • Manta, and Sting Rays- live in shallow water, have mouths located on the underside, are fairly docile, wide flat bodies and wing-like fins that are flexible.

  9. Types of Chondrichthyes • Sharks andRays- have no operculum and must keep moving to breathe. • Have different kinds of scales that feel and look more like sandpaper. • Have skeletons made of cartilage not bones.

  10. Osteichthyes Bony Fish: Salmon, Carp, Tuna Over 20,000 different species

  11. Types of Osteichthyes Ray Finned: • Most fish are this type • Fins are supported by bony structures called Rays. • Teleosts are the most advanced form of ray finned fish (symmetrical tails and mobile fins). Lobe Finned: • Fins are long, fleshy, muscular, supported by central core of bones. • Thought to be ancestors of amphibians. • Examples are: Coelacanth, Lungfish

  12. Fish Characteristics • Gills • Backbone (vertebrae) • Paired Fins • Single Loop Circulation • Two chambered heart

  13. Fish Anatomy

  14. Fins

  15. Different Dorsal Fins

  16. Fish Respiration • Water flows over Gills as fish opens mouth and swims. • Water flows opposite direction of blood flow. • O2 diffuses from the water into the blood. • Gills are made of thousands of gill filaments. • Gills are covered by the Operculum.

  17. Up Close and Personal

  18. Fish Circulation • Fish heart has 2 chambers • Single loop circulation • Blood flows into gills, picks up O2, goes to the body, returns to the heart.

  19. Fish Reproduction • Most Fish reproduce sexually, and fertilize their eggs externally (Sharks-internally). • Spawning is the process of fertilizing eggs. • Baby fish are called FRY.

  20. Let’s Get Ready to Rumble…..

  21. Lamprey Spawning Behavior

  22. Fish Adaptations • Lateral Line System- used to detect vibrations, orient the fish in water, it is a line of cells running down the side of the fish. • Operculum- gill cover, movement of operculum allows more water to be drawn in. • Swim Bladder- a gas filled sac that helps the fish maintain buoyancy. Sharks don’t have a swim bladder! • Fins- Dorsal, Caudal, Pectoral, Pelvic, Anal.

  23. Adaptations Air Bladder Operculum Lateral Gills Line Fins

More Related