BASIS OF CLASSIFICATION:-
Animals are classified based on coelom, body symmetry, patterns of digestive, circulatory or reproductive system etc.
Presence or absence of body cavity is another basis for classification. They can be pseudocoelomate, acoelomate, or coelomate.
TYPES OF ANIMAL KINGDOM
Chondrichthyes (cartilaginous fishes)
Pleurotremata: sharks
Hypotremata: rays, sawfish
Osteoichthyes (bony fishes)
Anguilliformes: conger eel, moray eel
Atheriniformes: flying fishes
Cypriniformes: goldfish, carp, piranha, minnow, electric eel
Cyprinodontiformes: black molly
Gadiformes: cod, whiting
Gasterosteiformes: seahorse, stickleback, leafy seadragon, pipefish
Perciformes: grouper, beat, mackerel, parrot fish, goby, angel fish, perch, wrasse,
clownfish, remora, snapper, surgeonfish, bass, barracuda, cichlid
Pleuronectiformes: sole, halibut, turbot (flat fishes)
Salmoniformes: trout, salmon, viperfish
Scorpaeniformes: scorpionfish
Siluriformes: catfish
Synbranchiformes: swamp eel
Tetraodontiformes: blowfish, triggerfish, porcupine fish
