J A W L E S S & C A R T I L A G I N O U S F I S H E S
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Jawless fish like lampreys and hagfish have no vertebrae or jaws. Lampreys are parasites with a larval stage while hagfish live on the ocean floor as scavengers. Cartilaginous fish like sharks have a skeleton of cartilage and ventral mouths. They have tails like heterocercal or homocercal tails and complex digestive systems to break down their food. They reproduce internally and give live birth.
J A W L E S S & C A R T I L A G I N O U S F I S H E S
- 1. ?
- 2. JAWLESS FISH=> Subphylum: Vertebrata, Class: Agnatha lampreys and hagfishes scaleless, cylindrical body no vertebral column (a notochord) poor swimmers
- 3. JAWLESS FISH=> LAMPREYS are usually parasites with a larval stage which filter-feeds HAGFISHES have no larval stage and live at the bottom of cold seas acting as scavengers.
- 4. buccal funnel or ¡°³¾´Ç³Ü³Ù³ó¡±
- 5. lampreys on lake trout
- 6. sea lamprey
- 8. ?
- 9. CARTILAGINOUS FISH=> Subphylum: Vertebrata, Class: Chondrichthyes sharks, rays and skates skeleton of cartilage hinged jaws, paired fins ventral mouth
- 10. ?
- 11. heterocercal tail homocercal tail TAILS:
- 12. ?
- 13. CARTILAGINOUS FISH=> have large, oily liver for buoyancy (to 20% wt.) still heavier than water
- 14. CARTILAGINOUS FISH=> tough skin, placoid scales ventral mouth w/ 6 to 20 rows of sharp teeth
- 15. shark jawbone
- 16. ?
- 17. ?
- 18. CARTILAGINOUS FISH=> 5-7 pairs of gills (many must swim constantly)
- 19. Silky Shark
- 20. CARTILAGINOUS FISH=> complex digestive system with ¡° spiral valve intestine¡±
- 21. CARTILAGINOUS FISH=> have a ¡°lateral line¡± system fertilization is internal and are usually born live
- 22. Ampullae of Lorenzini
- 24. Gray Reef Shark
- 27. Hammerhead Shark
- 28. Silky Shark
- 29. Whitetip Reef Sharks need love too...
- 30. Whale Shark
- 31. Whale Shark
- 32. Whale Shark
- 36. Manta Ray
- 37. Manta Ray
- 38. ?