• Class : Chondrichthyes(Cartilagenous fishes )

• Sub Class:Elasmobranchii

• Order:Selachii

• Sub order:Selachoidea

• Eg:Shark

• Class : Chondrichthyes

• Sub Class:Elasmobranchii

• Order:Selachii

• Sub order:Batoidea

• Eg: Rays

• Class : Chondrichthyes( Ophisthonephric kidneys)

• Sub Class:II- Holocephali

• Eg:Chimaera (Living fish)

• Unique feature tentacle on the head of the male

Chimaera

• Class:Osteichthyes (diphycercal caudal

fin,external fertilization)

• Sub class :Choanichthyes( bony fishes ,

lung breathers )

• Order: Crossopterygii(ancester of Amphibia)

Eg:Latimeria (living fossil, Coelocanth)

Latimeria

• 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)

• 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.)

•

Acipenser(common Sturgeon)

• Class:Osteichthyes

• Sub class :Actinopterygii

• Super Order:Holostei

Eg:Amia (Bow fin)N.America

Lepidosteus- jaws beak like

• Class:Osteichthyes

• Sub class :Actinopterygii

• Super Order:Teleostei

(Operculum, Air bladder,No terminal mouth,

Dipthcercal or 1st heterocercal secondarily homocercal)

Order: IsopondyliHerrings

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

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

fishes

Clarias(cat fish)air breathing fishes

Order:Apodes-Indian Anguilla(eel)&Muraena

migratory fishes

Order:Heteromi-Notocanthus

Order:Mesichthyes-Hippocampus(sea horse)

Anguilla(eel)

Exocoetus (Flying Fish)

Syngnathus(pipe fish)

Hippocampus

Echeneis (sucker fish)

Tetradon(puffer fish) Inflates body with water

Sardines for oil production

Indian Salmon

Gambusia(destroy mosquito larvae-larvivorous)