FISH
- Which are the three major types
of fishes? The three
major types of fishes are jawless fishes, rays, and sharks.
- How do the fish breathe?
By taking the water in their mouth and letting it pass through
the gills. The gills have membranes with blood vessels
and about 80% of the Oxygen is absorbed immediately to the
blood system.
- Which fishes are called the man
eaters? The piranhas
found in the South American sea are very vicious and
blood-thirsty fishes and are called man-eaters.
- What is an Eel?
Eels are long-bodied fishes found in temperate and tropical
seas all over the world.
- Which is called the electric
eel? The eels which
are found in South-American rivers can discharge almost
400-500 volts from its tail and which can kill a person on
contact are called the electrical eels.
- What is Portuguese man-of-war?
It is a jelly fish like floating colony of polyps which has
stinging tentacles with a length of 18 metres and very
poisonous, almost as powerful as the cobras.
- Which is the fish that has three
hearts? The cuttle
fish has three separate hearts. Two of the hearts are
placed at the base of the gills to absorb oxygen, the other is
to pump the blood to various organs.
- Name the three main members of
the whale family:
The largest member is the whale itself with different sub
varieties of which the largest is the Blue Whale. The
next in size is the Dolphin. The smallest is the
porpoise.
- How big is a whale?
Female blue whale is the biggest of all the animals, with an
average length of 80-90 feet and weighs about 100 tonnes.
- Which whale has the heaviest
brain? Sperm whales
has the heaviest brain. It weighs more than 9 kg
(average weight of a human brain is 1.5 kg).
- What is Baracuda?
Baracuda is the name given to about 20 species of salt water
carnivorous fishes, with big jaw and teeth.
- Are baracudas sharks?
No, baracudas are not related to sharks. Their skeletons
are made of bone and not cartilage like those of sharks.
- How do Dolphins communicate?
They navigate and hunt by making distinctive under water
sounds. They can emit nearly 32 different sounds.
- Which is the fish that has four
eyes? The fish found
in tropical America. It usually swims on the surface of
the water. The upper part is adapted for the vision in
the air and the lower part for vision in water.
- What are flying fishes?
These fishes actually do not fly, they slide propelled by
their tails, they leap into the air and use the front fins as
wings.
- Which is the fish that breathes
atmospheric air directly?
The lung fish has a swim bladder that functions like a lung.
It takes in air at the surface.
- What do you know about sea
snakes? Sea snakes
are very poisonous. They have their fangs in front of
the mouth. The tail of a sea snake is shaped like an
oar. Some sea-snakes lay eggs on land. They live
on fishes, mainly eels. They are mostly found in the
Indian and the Pacific oceans.
- What is Seal?
Seal is an aquatic mammal found in coastal waters. It is
also called sea elephant. The larger variety is called
the sea-lion. Seals feed on fishes. The Antartic
leopard seal lives on penguins.
- Which is the fastest fish?
The fastest fish is the Cosmopolitain sailfish. Its
average speed is 109.7 km/hr.
- Which fish lays more eggs?
The Ocean Sunfish (Mola mola) lays nearly 300,000,000 eggs.
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