cat fish
dog fish
flying fish
seahorse
D. seahorse
Oxygen
Carbon dioxide
Fish food
Decoration
mollusc
mammal
star fish
bony fish
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Whale
Tadpole
Aquatic urodeles
Common Indian dog fish
a shell
egg case of skate fishes
a colony of skate fishes
none of these
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
the nature of their scales
the position of the mouth
the position of gill slits
the kind of the tail fin
Dasyatis
Chimaera
Sphyma
Torpedo
all types fishes
only cartilaginous fishes
only bony fishes
sea dwelling fishes
teleosts
sharks
lung fishes
rays
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
Endoderm
Mesoderm
Ectoderm
Integument
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
placoid
cycloid
ctenoid
rhombiod
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Shark
Cod
Amia
Both (a) and (b)
nostrils
mouth
gill slits
swimming bladder
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
Primates
Aves
Crocodiles
Pisces
Pterois
Fistularia
Gambusia
None of these
vitamin A
iron
calcium
vitamin B complex
pharyngeal gills
paired fins
dermal scales
all of these
pelvic fins
cloacal fins
anal fins
caudal fins
anandromous migration
catadromous migration
cartilaginous fish
none of these
dorsal
ventral
caudal
pelvic
respiration
excretion
movement
none of these
Saurology
Traumatology
Torpedology
Ichthyology
Sharks
Stingray
Dogfish
Catfish
dog fish
bony fishes
both (a) and (b)
all fishes