Respuesta :
Pacu (Portuguese pronunciation: [paˈku]) is a common name used to refer to several species of omnivorous South American freshwater serrasalmid fish that are related to the piranha.
Answer:
they are called a pacu fish also known as the pirranas less scarier brother the omnivours and they like nuts that fall from trees they also have a nickname of ball cutters because some bad accidents with male swimmers
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