1. Class : Chondrichthyes(Cartilagenous fishes )
Sub Class:Elasmobranchii
Order:Selachii
Sub order:Selachoidea
Eg:Shark

4. Class : Chondrichthyes
Sub Class:Elasmobranchii
Order:Selachii
Sub order:Batoidea
Eg: Rays

6. Class : Chondrichthyes( Ophisthonephric kidneys)
Sub Class:II- Holocephali
Eg:Chimaera (Living fish)
Unique feature tentacle on the head of the male

7. Chimaera

8. Class:Osteichthyes (diphycercal caudal
fin,external fertilization)
Sub class :Choanichthyes( bony fishes ,
lung breathers )
Order: Crossopterygii(ancester of Amphibia)
Eg:Latimeria (living fossil, Coelocanth)

9. Latimeria

10. Class:Osteichthyes
Sub class :Choanichthyes)
Order: Dipnoi(double breathing fishes,uncles of Amphibia, Dipnoi can live in drying pools, shows discontinuous distribution )
Eg:Epiceratodus (Australian lung fish)
Protopterus (African Lung fish,
have internal nostril)
Lepidosiren (south American lung
fish)

12. Class:Osteichthyes
Sub class :Actinopterygii
Super Order: Chondrostei
Eg:1-Acipenser (common Sturgeon) Lives in Europe, keeled bony plate
2-Scaphirhynchus(Shovel –shaped Sturgeon)
3-Polyodon(Spoon billed Sturgeon) dorsal fin split into finlets
4-Polypterus(shining scales, overcomes drought.
It has bilobed lung.)

13. Acipenser(common Sturgeon)

14. Class:Osteichthyes
Sub class :Actinopterygii
Super Order:Holostei
Eg:Amia (Bow fin)N.America
Lepidosteus- jaws beak like

16. Class:Osteichthyes
Sub class :Actinopterygii
Super Order:Teleostei
(Operculum, Air bladder,No terminal mouth,
Dipthcercal or 1st heterocercal secondarily homocercal)

17. Order: Isopondyli Herrings

18. Order:Ostariophysi -Cyprinus carpio(Carps) ,Arius (catfishes) and Rohu(major carp)Clarias,

19. Arius(cat fish)parental care,males retain the eggs in their mouth till they are hatched, air breathing fishes

20. Clarias(cat fish)air breathing fishes

21. Order:Apodes-Indian Anguilla(eel)&Muraena migratory fishes

22. Order:Heteromi-Notocanthus

23. Order:Mesichthyes-Hippocampus(sea horse)

24. Anguilla(eel)

25. Exocoetus (Flying Fish)

26. Syngnathus(pipe fish)

27. Hippocampus

28. Echeneis (sucker fish)

29. Tetradon(puffer fish) Inflates body with water

30. Sardines for oil production

31. Indian Salmon

32. Gambusia(destroy mosquito larvae-larvivorous)