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5. Fish vs Amphibians

6. Fishes

9. Characteristics of Fishes
•Fish are aquatic vertebrates that have vertebral
column called spine.
•A classic fish is a torpedo shaped.
•The fish contains head containing a brain and
sensory organs, a trunk with a muscular wall
surrounding a cavity with the internal organs and a
muscular post-anal tail.
The following are the general characteristic that all
the fish species posses:
•Ectothermic
•Lateral line
torpedo shape

11. Taxonomy

12. 2. Class Chondrichthyes (Carlagneoud fishes)

13. 3.(Class Osteichthyes)
Traits of Bony Fishes

14. Respiration in fishes

15. Fig. structure of gills & mechanism of
respiration

16. Amphibians

17. There are three living orders of amphibians….
1. Anura (frogs and toads) (without tail)

18. .2. Caudata (salamanders) (tailed)

19. 3. Apoda or Gymnophiona (caecilians)
(without legs)

21. Amphibian characteristics…..

22. •They must return to the water to reproduce.
•They must keep their skin moist so they can exchange gases.

23. Chapter 40

24. Amphibian reproduction

26. Chapter 40
Respiration

27. Difference Between Fish and Amphibians
Fish Amphibians
Entirely aquatic Not entirely aquatic, but most of the larval stages
live in water and move to land
Highest taxonomic diversity
among vertebrates with
32,000 species
6,500 extant species
Evolved before 500 million
years
Evolved from fish before 400 million years

28. Fishes Amphibians
More species in saltwater
than freshwater
Aquatic species are mostly inhabit freshwater
than saltwater
Scale covered skin No scales, but moist skin
Respiration mainly through
gills, except lungfishes
Respiration takes place through lungs mainly.
However, skin, oral cavity, and gills are also
functional in any combination of those according
to the environment they live
Metamorphosis is very rare Metamorphosis is common

29. WHAT CHARACTERISTICS DO FISH & FROGS
SHARE?

34. • PLEASE CLAP FOR THAT
• AMAZING PRESENTATION

35. Slides per person
1. 1-10
2. 11-15
3. 15-19
4. 20-26
5. 27-34