Question

why clasper is absent in bony fish?​

Answer 1

Explanation:

In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating.

The claspers of a spotted wobbegong shark (Orectolobus maculatus)

The claspers of a young spinner shark (Carcharhinus brevipinna)

A close up view of a chimaera clasper (Hydrolagus collie). Note the many small tooth-like projections covering the exterior surface.

Male cartilaginous fish have claspers formed from the posterior portion of their pelvic fin which serve as is used to channel semen into the female's cloaca during mating. The act of mating in some fish including sharks usually includes one of the claspers raised to allow water into the siphon through a specific orifice. The clasper is then inserted into the cloaca, where it opens like an umbrella to anchor its position. The siphon then begins to contract, expelling water and sperm.[1][2] The claspers of many shark species have spines or hooks,[3] which may hold them in place during copulation.[4] Male chimaeras have cephalic claspers (tenacula) on their heads, which are thought to aid in holding the female during mating.

Answer 2

Aɴsᴡᴇʀ:-

Male cartilaginous fish have claspers formed from the posterior portion of their pelvic fin which serve as is used to channel semen into the female's cloaca during mating. The act of mating in some fish including sharks usually includes one of the claspers raised to allow water into the siphon through a specific orifice. The clasper is then inserted into the cloaca, where it opens like an umbrella to anchor its position. The siphon then begins to contract, expelling water and sperm.[1][2] The claspers of many shark species have spines or hooks,[3] which may hold them in place during copulation.[4] Male chimaeras have cephalic claspers (tenacula) on their heads, which are thought to aid in holding the female during mating.