Water into the gills of fishes passes through
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Most venomous fish is
The tympanum is absent in
In fishes, the lateral line receptors are
Chondricthyes is not characterised by the presence of
The flying fish Exocoetus belongs to the class
Which of the following fishes lack claspers, used for internal fertilization in cartilaginous fishes…
An anamniote group is
Anandromous fishes are those which
Sharks and rays can be distinguished by
Cod liver oil is a rich source of
Fishes swim in water because they have
Fillibranch gills are present in
Salmon is an example of
Which of the following is not characteristic of chondricthyes ?
Placoid scales are found in
Mermaid purse is
The saw fish Pristis is a member of the class
Which of the following does not have lateral line organs ?
Chondrichthyes differs from Osteichthves in
Parental care is a characteristic of
Torpedo is a name for
The pair of fins found near the operculum in bony fishes is known as
A fish is characterised by the presence of
Which of the following is a Shark ?
In sharks, the scales are
Fish scales originate from one of the following?
Air bladder in fishes does not help in
Pectoral fins are not clearly marked off from the body in
In a fish aquarium green aquatic plants are grown for
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