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Fishes

Fishes are an aquatic, craniate, gill-bearing animals that lack limbs with digits.

Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups.

Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts.

 

 

From Wikipedia