What categories do ninety-five percent of all fish belong too?

Ninety-five percent of all fish belong to the category of ray-finned fishes (Actinopterygii).

Here's why:

* Ray-finned fishes are the most diverse and abundant group of vertebrates on Earth, with over 30,000 species. They have fins supported by bony rays, which allows for greater maneuverability and swimming efficiency.

* Cartilaginous fishes (Chondrichthyes), like sharks, rays, and chimaeras, make up the remaining five percent. They have skeletons made of cartilage instead of bone.

Therefore, the vast majority of fish belong to the category of ray-finned fishes.