Question

Exocoetus is a type of fish.
(a) Bony
(b) Semi-bony
(c) Cartilaginous
(d) None of these

Answer 1

Exocoetus is the marine hard flying fish. These fishes have teeth that are fixed onto the upper jaw and a dip bladder (an air-filled sac, permitting them to look after lightness) that opens into the neck.

Complete answer:
Hard fish need not swim to inhale (to push water through the gills). Exocoetus is a variety of flying fishes. It is a hard fish. The body is covered with cycloid scales. They are normally found in the epipelagic zone, the top layer of the sea to a profundity of around 200 m (656 ft). Barbados is known as "the place where there is the flying fish", and the fish is one of the public images of the nation
Around 64 species are assembled in seven to nine genera. While they can't fly similarly a feathered creature does, flying fish can make ground-breaking, self-moved jumps out of the water where their long wing-like blades empower floating for significant distances over the water's surface. The fundamental purpose behind this conduct is believed to be to escape from submerged predators, which incorporate swordfish, mackerel, fish, and marlin, among others, however, their times of flight open them to assault by avian hunters, for example, frigate winged animals...

So, the correct answer is ‘Bony’.

Note:
One such component is completely expanded neural curves, which go about as additional locales for connective tissues and tendons in a fish's skeleton. Completely widened neural curves go about as steadier and sturdier destinations for these associations, making a solid connection between the vertebral segment and cranium. This at last permits an unbending and strong vertebral segment (body) that is gainful in flight.