Fish

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Fish are 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.

Tetrapods (amphibians, reptiles, birds and mammals) emerged within lobe-finned fishes, so cladistically they are fish as well. Nevertheless we only speak in this page of "fishes" which are not Tetrapods

For more information, visit the Wikipedia entry.

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Armoured fishes Jawless fishes Lobe-finned fishes
Ray-finned fishes Sharks & allies †Spiny sharks