Fish vary greatly in size. The whale shark and basking shark exceed all other fish by a considerable margin in weight and length. Fish are a paraphyletic group that describes aquatic vertebrates while excluding കൂടുതൽ കാണുക

The cartilaginous fish are not directly related to the "bony fish," but are sometimes lumped together for simplicity in … കൂടുതൽ കാണുക

• Megafauna
• List of longest fish
• Largest organisms കൂടുതൽ കാണുക

• Hagfish (Myxini)
The hagfish, which are not taxonomically true fish, are among the most primitive extant vertebrates. There is only one order and family in this animal class. All of the 77 known species have elongated, eel-like bodies … കൂടുതൽ കാണുക

The largest fish of the now-extinct class Placodermi was the giant predatory Dunkleosteus കൂടുതൽ കാണുക

Ray-finned fish (Actinopterygii)
The largest living bony fish (superclass Osteichthyes, which includes both
As … കൂടുതൽ കാണുക