Parental care by males is found in
hippocampus
labeo
anabes
none of these
Correct Answer :
A. hippocampus
Related Questions
Which fish is famous for cod liver oil ?
Shark
Cod
Amia
Both (a) and (b)
Cod liver oil is a rich source of
vitamin A
iron
calcium
vitamin B complex
Pectoral fins are not clearly marked off from the body in
sharks
rays
whales
lung fishes
A fish is characterised by the presence of
pharyngeal gills
paired fins
dermal scales
all of these
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
The pair of fins found near the operculum in bony fishes is known as
anterior fins
ray fins
pectoral fins
paired fins
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
The fish used to control spread of malaria is
Pterois
Fistularia
Gambusia
None of these
An anamniote group is
Primates
Aves
Crocodiles
Pisces
Which one of the cartilaginous fishes posses an operculum over the gill ?
Trygon
Torpedo
Chimaera
Sphynta
In Scoliodon, the thermoreceptors are
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
In a fish aquarium green aquatic plants are grown for
Oxygen
Carbon dioxide
Fish food
Decoration
Air baldder in fishes does not help in
respiration
excretion
movement
none of these
Heterocercal tail fin is a characteristic of which group of fishes?
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
Sea horse is a
mollusc
mammal
star fish
bony fish
In fishes, the lateral line receptors are
olfactoreceptors
rheoreceptors
gustoreceptors
chemoreceptors
Torpedo is a name for
sawfish
seahorse
electric ray
sucker fish
The tympanum is absent in
dog fish
bony fishes
both (a) and (b)
all fishes
The saw fish Pristis is a member of the class
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
Which of the following fishes lack claspers, used for internal fertilization in cartilaginous fishes ?
Sharks
Stingray
Dogfish
Catfish
Parental care by males is found in
hippocampus
labeo
anabes
none of these
Sharks and rays can be distinguished by
the nature of their scales
the position of the mouth
the position of gill slits
the kind of the tail fin
Chondricthyes is not characterised by the presence of
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
Which of the following does not have lateral line organs ?
Whale
Tadpole
Aquatic urodeles
Common Indian dog fish
Which of the following is not characteristic of chondricthyes ?
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish