1. Fish, Amphibians and Reptiles

2. Phylum: Chordate – all have spinal cords Subphylum: Vertebrates – all have a spinal cord held within a bony spinal back bone Classes are: Jawless Cartilage, and Bony Fish

3. Fish characteristics – all fish have these: All fish have notochords (they are used for support but are eventually replaced by back bones)

4. All have nerve cords All have two chamber hearts. All live in the water, are aquatic. Except mudskippers! And more mudskippers.Except mudskippers!And more mudskippers. All are cold blooded Exterior view Click on heart to see HUMAN heart circulation Interior View

5. All have gill slits to breathe

6. Gills – feathery organs for gas exchange

7. Three Classes of Fish (In the Phylum Chordate)

8. Jawless Fish No Jaw – use suction cups to eat No paired fins No Scales Endoskeleton is all cartilage Has a notochord for all its life Examples: Hagfish and lampreyHagfish

9. Cartilage Fish Endoskeleton is all cartilage First fish type to have jaws, scales and paired fins Manta Ray – video – click on picture Shark video

10. Sharks Have rows of teeth Most are meat eaters Keen sense of smell

11. Rays Large paired fins extend on body sides like wings Live near the ocean floor Feed on small fish, mollusks, and crustaceans, and croc hunters

12. Boney Fish Largest class of fish Huge variety Scales and paired fish Both fresh and salt water Gills have gill covers to increase water flow Lateral line – detects vibrations Nostrils – odor sensitive/better than sight Air bladder – (swim bladder) regulated swim depth Tail called caudal fin

15. Scales – physical protection

16. Fish reproduce by spawningspawning Usually external fertilization Blue gill spawning bed

17. Boney Fish Gallery Creatures of the Deep Seahorse African Cichlids Trout Clown Fish Small mouth bassBlue Marlin

18. Fish Gallery, con’t Salmon spawning Sunfish Northern Pike Butterfly fish

19. Fabulous Fish Videos

20. Amphibians (Class)

21. Amphibian – means double life Frogtoad salamander newt TWO Orders: Tailess: Tailed:

22. Poison Dart Frogs

23. Salamanders Mud puppy

24. All have a three chambered heart

25. Breathing –Use their thin, moist skin to breathe in water or land too –Also use simple lungs to breathe on land

26. Hibernate in Winter Frogs hibernate in the Winter Frogs estivate in the Summer Frogs are COLD blooded!!

27. Metamorphosis

28. TWO Orders TAILess – Frogs and Toads TAILed – Newts and Salamanders

29. Reptiles

30. Cute!

31. General Characteristics Ectotherms (cold blooded) Lay water-tight, leathery eggs on land or giveleathery eggs birth to live young Internal fertilization

32. General Characteristics, con’t –No metamorphosis –Breathe with lungs entire life –Three chambered heart

33. –Most have four legs (except snakes) –Most have claws – to dig, climb and run –Scales prevent drying out and injuries

34. Reptiles -4 orders

35. Reptiles-Snakes

36. Snake Characteristics have no ears (tympanic membrane instead) use tongues for “smelling” tongue picks up chemicals from the air and transfers them to a sensing organ (Jacobs organ) in the roof of the mouth

38. Pit vipers and some pythons, have heat- sensitive pits on their face Some snakes inject venom into the prey through hollow fangs

39. They molt when they grow Non moveable eye lids

40. Largest - Anaconda Most poisonous in world – sea snake Most poisonous in U.S. – coral snake Flying SNAKES!!!

41. Lizards Basilisk Lizard Frilled lizard

42. Examples: iguana, gecko, skink, chameleon

43. Can release it’s tail to escape Moveable eye lids Some have long, sticky tongue for capturing food

44. Largest – Komodo Dragon Gila Monster - poisonous

45. Alligators and Crocodiles

46. Characteristics –eat any type of animal or can canabalize also –can live for up to 100 years –called last living dinosaur –temperature of egg, determines the sex of offspringtemperature of egg, determines the sex of offspring –lay about 50 eggslay about 50 eggs

47. alligators may have 80 teeth and average 6 to 14 feet but may get up to19 ft long swallow prey hole Crocodiles can reach 6 meters often crocodiles have survived for over 200 million years crocks have narrower snout than alligator

48. crocks can stay under water for up to 2 hours most live in shallow water only reptile with a 4 chambered heart Here's what a crocodile heart looks like. Look at all that plumbing! It has a few features that we don't have, that I'll get to in a moment, and that are special adaptations for the life of an ectothermic, diving ambush predator.

49. Turtles and Tortoises

50. have two hard boney shells land and water types have no teeth

51. use beak to feed endangered due to soups and jewelry eat worms, fish and insects, some are also herbivores some can completely hide inside their shells

52. More feeding

53. some swim faster than you can run turtle more dependent on water environment, tortoise is land dweller only.