Swedish men are being warned against any inclination for nude swimming after a new species of fish has been discovered in their waters which enjoys biting testicles.
A 21cm pacu fish, a relative of the piranha, was found by fisherman in the Oresund Sound off the south coast of the country last week.
Known in Papua New Guinea as 'The Ball Cutter', the pacu has reportedly been responsible for the deaths of two fishermen in the Pacific nation, who died from blood loss after the fish had bitten off their testicles.
Nutcracker: The Pacu fish, a relative of the piranha, has been known to attack male genitalia
A freshwater fish, it can grow up to 90cm long and weigh up to 25kg.
Mainly found in the rivers of the Amazonian basin, they have flatter teeth which are very similar to humans and perfect for crunching.
Their diet is mainly nuts, leaves, aquatic vegetation and snails - but on occasion they have been known to enjoy the taste of human flesh.
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