December 13, 2015 — Q. We know that aquatic mammals communicate with one another, but what about fish?
A. Fish have long been known to communicate by several silent mechanisms, but more recently researchers have found evidence that some species also use sound.
It is well known that fish communicate by gesture and motion, as in the highly regimented synchronized swimming of schools of fish.
Some species use electrical pulses as signals, and some use bioluminescence, like that of the firefly.
Some kinds of fish also release chemicals that can be sensed by smell or taste. In 2011, a scientist in New Zealand suggested that what might be called fish vocalization has a role, at least in some ocean fish.
Read the full story at the New York Times