Piranha is a general name used to describe a group of freshwater fish with a fearsome reputation when it comes to feeding. There are between 40 and 60 different species; none grow larger than two feet ...

Not only do different piranha species vocalize differently, piranhas make different types of noises to communicate different messages. For instance, a "bark" might be a warning for another fish to ...

Piranha is a general name used to describe a group of freshwater fish with a fearsome reputation when it comes to feeding. There are between 40 and 60 different species; none grow larger than two ...

they noticed the fish were subtly but consistently different. The team realized they’d discovered a new species: Serrasalmus castellonae, or Castellón’s piranha. Castellón’s piranhas have ...