Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
Endoderm
Mesoderm
Ectoderm
Integument
respiration
sound production
excretion
movement
anterior fins
ray fins
pectoral fins
paired fins
live in sea water and migrate to fresh water rivers and lakes for breeding
live in fresh water and migrate to sea for breeding
both (a) and (b)
none of these
a shell
egg case of skate fishes
a colony of skate fishes
none of these
lungs
air bladders
cartilaginous skeleton
fins
Pterois
Fistularia
Gambusia
None of these
a rounded body with ventral gill clefts
a flattened body with dorsal gill clefts
a flattened body with ventral gill clefts
any of these
the nature of their scales
the position of the mouth
the position of gill slits
the kind of the tail fin
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
teleosts
sharks
lung fishes
rays
respiration
excretion
movement
none of these
pharyngeal gills
paired fins
dermal scales
all of these
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
nostrils
mouth
gill slits
swimming bladder
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
electric fish
saw fish
stone fish
dog fish
olfactoreceptors
rheoreceptors
gustoreceptors
chemoreceptors
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Saurology
Traumatology
Torpedology
Ichthyology
cat fish
dog fish
flying fish
seahorse
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
Trygon
Torpedo
Chimaera
Sphynta
10 volts
100 volts
50 volts
150 volts
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
vitamin A
iron
calcium
vitamin B complex
Oxygen
Carbon dioxide
Fish food
Decoration
Coelocanth
Diodon
Sturgeon
Labeo
pelvic fins
cloacal fins
anal fins
caudal fins