Exactly what are the primary Types ofFish?
Fish are classified into 3 primary types centered on their skeletal structure and respiratory units:

Bony Fish (Osteichthyes): This group consists of species like salmon, trout, and cod, accounting for approximately 96% of all fish species. Their skeletons are created of bones, and they've got operculum (gill handles) for respiration.

Cartilaginous Fish (Chondrichthyes): Fish like sharks, rays, and skates fall into this team, characterized by skeletons made of cartilage. They generally have numerous gill slits without addresses.

Jawless Fish (Agnatha): Primitive fish like lampreys and hagfish belong to this category. Contrary to other fish, they lack jaws and rely upon suction or other exclusive feeding methods.