1. Vertebrates   Phylum Chordata   Fish (3 classes)     Ichthyology- study of fish  

2. Class Agnatha
- jawless fish
hagfish and lampreys
- they suck blood or bore into their bodies and eat them from the inside out.  

3. Hagfish

4. Hagfish

6. Hagfish slime

7. Lampreys

8. lamprey

9. Lamprey Mouth

11. Lamprey Damage

13. - sharks, rays and skates - skeleton made of cartilage
2.Class Chondrichthyes
- cartilaginous fish  
- sharks, rays and skates  
- skeleton made of cartilage  
- rough sand papery skin  

14. Chondrichthyes

15. Cartilaginous skeleton

16. Denticles

18. Shark Skin

19. Shark Skin

20. SHARKS  
250 species  
- found throughout oceans at all depths, but mostly in tropical coastal waters;a few found in freshwater (bullshark)  
- all sizes from 10 in.(spiny pygmy shark) to 60 ft.(whale shark)  
- most carnivorous predators, some peaceful plankton feeders.  

23. Sharks

24. Bull Shark

25. Spiny Pygmy Shark

26. Whale Shark

32. Sand Tiger Shark

33. Tiger Shark

35. Leopard Shark

36. Nurse Shark

37. Basking Shark

40. Saw Shark

41. Stingrays and Skates have flat bodies and mostly live on the bottom
- gill slits are on the underside  
- pectoral fins are flat and expanded,look like wings  
- eyes on top of the head  
- stingrays have a whip like tail with a stinging spine  
- skates do not have a whip like tail with spines  

43. Sting Rays

45. Sting Rays

46. Stingray

48. Manta Ray

50. Stingray Stinger

51. Skates

52. Skate

53. Skate

54. Skates

56. Class Osteichthyes Bony Fishes - have a skeleton of bone
- have thin, overlapping scales covered with protective mucus
- have gill covers or operculum
- has a swim bladder, a gas filled sac that adjusts its buoyancy
- highly maneuverable fins

57. Bony Fish

59. Scales

61. Gills

62. Operculum

66. Boxfish

67. Mahi Mahi

68. Lionfish

69. Crocodile Fish

73. Flying Fish

74. Grouper

75. Halibut

77. Mola

78. Mola

79. Parrotfish

80. Sailfish

81. Scorpion fish

82. Tuna

83. Flounder

84. Salmon

85. Wolf eel

87. Coelacanth

88. Viperfish

89. Gulper Eel

90. Anglerfish