Placoid scales are found in
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Phylum - Pisces
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Which of the following is not characteristic of chondricthyes ?
Torpedo is a name for
Pectoral fins are not clearly marked off from the body in
The pair of fins found near the operculum in bony fishes is known as
An anamniote group is
Most venomous fish is
A fish is characterised by the presence of
Mermaid purse is
Fishes swim in water because they have
Anandromous fishes are those which
The flying fish Exocoetus belongs to the class
Sharks and rays can be distinguished by
Salmon is an example of
Torpedo, the electric ray, could give a shock of about
Fish scales originate from one of the following?
Which fish is famous for cod liver oil ?
Water into the gills of fishes passes through
Study of sharks and rays is known as
Which of the following is not true about bony fishes ?
A muscular fin, aiding in propulsion is
Cod liver oil is a rich source of
Which one of the cartilaginous fishes posses an operculum over the gill ?
Sea horse is a
The fish used to control spread of malaria is
A well developed swim bladder is seen in fishes which
A group of cartilaginous fishes specialised for bottom dwelling is
A homocercal tail is found in
Parental care by males is found in
Air baldder in fishes does not help in
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