The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
Correct Answer :
A. Coelocanth
Related Questions
Which of the following is not characteristic of chondricthyes ?
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
Study of sharks and rays is known as
Saurology
Traumatology
Torpedology
Ichthyology
The flying fish Exocoetus belongs to the class
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Salmon is an example of
anandromous migration
catadromous migration
cartilaginous fish
none of these
Water into the gills of fishes passes through
nostrils
mouth
gill slits
swimming bladder
Heterocercal tail fin is a characteristic of which group of fishes?
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts
Rays have
a rounded body with ventral gill clefts
a flattened body with dorsal gill clefts
a flattened body with ventral gill clefts
any of these
Which of the following is not true about bony fishes ?
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
The tympanum is absent in
dog fish
bony fishes
both (a) and (b)
all fishes
An anamniote group is
Primates
Aves
Crocodiles
Pisces
Air baldder in fishes does not help in
respiration
excretion
movement
none of these
Anandromous fishes are those which
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
Which of the following does not have lateral line organs ?
Whale
Tadpole
Aquatic urodeles
Common Indian dog fish
Parental care is a characteristic of
cat fish
dog fish
flying fish
seahorse
Air bladder in fishes does not help in
respiration
sound production
excretion
movement
Sea horse is a
mollusc
mammal
star fish
bony fish
Fish scales originate from one of the following?
Endoderm
Mesoderm
Ectoderm
Integument
Which fish is famous for cod liver oil ?
Shark
Cod
Amia
Both (a) and (b)
A fish is characterised by the presence of
pharyngeal gills
paired fins
dermal scales
all of these
Fishes swim in water because they have
lungs
air bladders
cartilaginous skeleton
fins
Chondricthyes is not characterised by the presence of
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Which of the following is a Shark ?
Dasyatis
Chimaera
Sphyma
Torpedo
The pair of fins found near the operculum in bony fishes is known as
anterior fins
ray fins
pectoral fins
paired fins
The function of swim bladder in fishes is mainly
sound production
respiratory
locomotion
hydrostatic
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
A well developed swim bladder is seen in fishes which
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
Torpedo is a name for
sawfish
seahorse
electric ray
sucker fish