No because sharks belong to the mammal family
Sharks belong in the fish family and resultingly the largest fish in the world is the basking shark. (A+ free swimmers)
Sharks share the same family as fish, which makes sharks fish. The other animals in the shark groups include searays and sting rays.
Stingrays are considered fish, they belong to the family of the sharks.
Sharks belong to cartilaginous fish. (Chondrichthyes)
There are many families of fish, but all belong to the phylum Chordata. That is about as specific as you can get in terms of encompassing ALL fish. However, MOST fish, called are classed in Osteichthyes(Bony Fish), Sarcopterygii (lobe finned fish) and Chondrichthyes(sharks, rays, skates, etc), and a hundred or so species of primitive jawless fishes.
Sharks are cartilaginous fish, belonging to the subclass Elasmobranchii. Skates are also cartilaginous fish, but they belong specifically to the family Rajidae within the order Rajiformes.
Chondrichthyes
because it is a fish that swims under water and they are called fish!
The only fish that do belong to the group are sharks, rays and chimaeras. All others do not.
The pufferfish belong to the family Tetraodontinae
Sharks belong to the class Chondrichthyes, which includes cartilaginous fish. This class encompasses both sharks and rays, characterized by their skeletons made of cartilage rather than bone. Sharks are further classified under the subclass Elasmobranchii, which distinguishes them from other fish types.
Class Chondrichthyes