Aggressive red-bellied piranhas produce "bark"-like sounds to scare off other piranhas when competing for food, a new study shows. The researchers found that the fish make three separate barking sounds depending on the manner of confrontation.
Digg, Digg
Fri, 10/14/2011 - 9:46am
Aggressive red-bellied piranhas produce "bark"-like sounds to scare off other piranhas when competing for food, a new study shows. The researchers found that the fish make three separate barking sounds depending on the manner of confrontation.