Add Yahoo as a preferred source to see more of our stories on Google. An image of a piranha.Getty Images A string of piranha attacks has taken place on the Paraguay River in recent weeks, per reports.

Add Yahoo as a preferred source to see more of our stories on Google. A close up picture of two piranha fish with their sharp triangular teeth exposed. A close up picture of two piranha fish with ...

Beccy holds a PhD in Biological Science, a Master’s in Molecular Biology of Parasites and Disease Vectors, and a Bachelor’s in Human Biology and Forensic Science.View full profile Beccy holds a PhD in ...

A freshwater Amazonian fish has evolved scales with microscopic armorlike structures specially designed to resist a piranha's piercing bite, new research shows. Subscribe to read this story ad-free ...