Translations:Fish/1/en

Fish Temporal range: 535–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Middle Cambrian – Recent
	Bala shark, a bony fish
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Olfactores
Subphylum:	Vertebrata
Groups included
	"Agnatha"; †"Placodermi"; †"Acanthodii"; Chondrichthyes; Osteichthyes Actinopterygii; Sarcopterygii (including tetrapods); ;
Cladistically included but traditionally excluded taxa
	Tetrapoda;

A fish is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break from the long tradition of grouping all fish into a single class (''Pisces''), modern phylogenetics views fish as a paraphyletic group.