Which of the following is NOT a structure found in bony fishes?

Question

1)claspers
2)lateral line
3)swim bladder
4)scales

Answer 1

The structure that is NOT found in bony fishes is:

1. claspers

Claspers are specialized reproductive structures found in some species of cartilaginous fishes, such as sharks and rays, but they are not present in bony fishes (osteichthyans). The other options, the lateral line, swim bladder, and scales, are structures found in bony fishes.