Fins Composed of Rod- Shaped Bones Surrounded by Thick Layers

Question

Fins composed of rod- shaped bones surrounded by thick layers of muscle are characteristic of
A) cartilaginous fishes.
B) lobe- finned fishes.
C) lampreys.
D) ray- finned fishes.
E) hagfishes.

Accepted Answer

Lobe-finned fishes have fins that are fleshy and lobed, supported by a central core of bones, which is distinct from the other types of fishes listed.