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FISH BIOLOGY
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FISH BIOLOGY

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  1. FISH BIOLOGY LEARN HOW TO READ A FISH Gulf Coast Research Lab, modified for 8th grade Connections by Russell Hawes

  2. FISH BIOLOGY • LEARN TO READ A FISH

  3. FISH ARE VERTEBRATES AS ARE MONKIES, APES AND MAN

  4. 6% 11% 15% 20% 48% AMPHIBIANS MAMMALS REPTILES BIRDS FISH FISH ARE THE LARGEST GROUP OF VERTEBRATES

  5. FISH TYPES • BONY FISH • CARTILAGENOUS FISH

  6. CARTILAGENOUS FISH • SHARKS • SKATES AND RAYS • CHIMAERAS

  7. SHARKS

  8. NURSE SHARK

  9. TORPEDO RAY

  10. CHIMAERAS

  11. BONY FISH • REPRESENT 97% OF ALL FISH SPECIES

  12. FOUR EYED BUTTERFLY FISH

  13. EVERY FISH HAS: • FINS • GILLS • SCALES

  14. IN BONY FISH THE FINS ARE SUPPORTED BY BONY RAYS

  15. BONY RAYS SUPPORTING FINS

  16. CAT FISH

  17. FINS • DORSAL FINS • CAUDAL FINS • ANAL FINS • PECTORAL FINS • PELVIC FINS

  18. FINS

  19. CAUDAL FINS

  20. CAUDAL FINS

  21. DORSAL FIN

  22. CAUDAL FIN

  23. ANAL FIN

  24. ANAL FIN

  25. ANAL FINS

  26. PECTORAL FINS

  27. PECTORAL FINS

  28. PECTORAL FINS

  29. PECTORAL FINS

  30. EAGLE RAY

  31. PELVIC FINS

  32. UNUSUAL DORSAL, ANAL AND CAUDAL FINS

  33. WEEDY FISH WITH HIGHLY MODIFIED FINS

  34. SEA DRAGON

  35. GILLS ARE COVERED AND PROTECTED BY AN OPERCULUM

  36. GILLS

  37. IN BONY FISH THE SCALES ARE USUALLY FLAT BONY PLATES

  38. SCALESTHREE MAIN TYPES • GANOID • CTENOID • CYCLOID

  39. ANGELFISH

  40. GANOID SCALES • DIAMOND SHAPE SCALE FOUND ON MORE PRIMITIVE BONY FISH LIKE THE GAR. • MADE OF A SILVERY ENAMEL CALLED GANOIN ON THE UPPER SURFCE AND BONY MATERIAL BELOW.

  41. Exposed side Anterior Side Ganoin Surface

  42. CTENOID SCALES • COMBLIKE BONY TEETH ON THE EXPOSED POSTERIOR MARGIN • SCALES ARE MORE FLEXIBLE THAN GANOID

  43. Embedded side  Exposed side  Radius   Focus Anterior End Ctnes

  44. CYCLOID SCALES • CIRCULAR THIN SCALES WITH BONY RIDGES AROUND A CENTRAL FOCUS • SEASONAL CHANGES IN GROWTH CAN BE INDICATED BY THE ANNULI (BONY RIDGE PATTERNS)

  45. Ridges Anterior End Focus Exposed side with pigments Embedded side

  46. CARTILAGENOUS FISH SCALES • PLACOID SCALES • DERMAL DENTICLES • GIVE A SAND PAPER TEXTURE TO SKIN

  47. BODY SHAPES • FUSIFORM • COMPRESSED • DEPRESSED • ELONGATE • GLOBIFORM • TRUNCATE

  48. FUSIFORM – IDEAL FOR SWIMMING

  49. BLUEFIN TUNA