Researchers say fish can make sounds that can be heard by people and animals on the surface of the water.
Timothy Lowell, a graduate student at the Scripps Oceanography Institute at the University of California, San Diego, said he would like to conduct an extensive study of fish sounds with an interest in fish.
Lowell and his team have studied intensively on migrating croakers. But because they are easy to find, they are caught and are in danger of extinction.
The Cyril resides in the Delta River. The water on the Delta River was not very clear, so even though the floor was invisible, Lowell could hear the sound of a male croaker like a machine gun.
Male fish use a boat and a breeze to make a sound.
"I think it is the loudest spawning sound in the world," Lowell said. It was louder than any other fish we've seen. "
The sound of the fish and other fish is as loud as turning a lawn mower or chainsaw in the water, so fishermen can guess and catch where the fish are.