What Are the principle Kinds ofFish?
Fish are classified into 3 primary styles dependent on their skeletal construction and respiratory methods:

Bony Fish (Osteichthyes): This classification incorporates species like salmon, trout, and cod, accounting for around ninety six% of all fish species. Their skeletons are made of bones, and they may have operculum (gill handles) for respiration.

Cartilaginous Fish (Chondrichthyes): Fish like sharks, rays, and skates tumble into this team, characterized by skeletons crafted from cartilage. They normally have multiple gill slits devoid of covers.

Jawless Fish (Agnatha): Primitive fish like lampreys and hagfish belong to this classification. As opposed to other fish, they deficiency jaws and count on suction or other unique feeding approaches.