"Be sure to wear a bathing suit when swimming in the Øresund Strait. There may be more Pacu inhabiting the strait."

A 21-centimeter-long piranha-like fish, Pacu, was found in the Øresund Strait in southern Sweden, warned by experts at the Danish National Museum of History. The Swedish English media The Local reports.

According to the media, Pacu is usually a fish that lives in warmer climates such as South America. It is called a "ball cutter" and is feared by men in the area who bathe naked for the purpose of washing their bodies. But it is unknown why Pacu was found in the Nordic waters. Henrik Carl of the Danish National Museum of History explained to the media the nature of Pacu:

"Pacu is a herbivore that normally does not attack humans, but it can be serious if bitten. For example, in Papua New Guinea, a man has been bitten by his testicles.

Pacu is hungry and bites into the human testicles. The testicles are just the right size for their mouth. "


In the case of Papua New Guinea, a fisherman whose testicles were bitten by Pacu died from heavy bleeding.

Carl says it's important to wear a swimsuit to avoid being bitten by Pacu.

"Pacu's mouth isn't that big and usually eats nuts, fruits and small fish, but human testicles resemble nuts and can be mistaken for nuts."

Carl said he wasn't too worried at this point, but he couldn't be relieved.

"If this isn't the only Pacu, it could be a big problem in the near future. This is the first Pacu caught, but no one knows if this is the last one."