Question

which fish harm to peoples

Answer 1

Carnivorous fish (Flesh-eating fish) harm people.
Eg: Sharks, Pirhanas, etc.

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Answer 2

fishes like shark can harm people by eating them.
rohu fish also attacks on people.
Fishes like puffer fish or swell fish, red lion fish, candiru Fish, tiger fish, phirana also are very dangerous fishes of the world..

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