People have known that fish make sounds since ancient Greece; that’s why they gave some fish names like red drum, pig fish or croaker. “They’re based on the sounds these fish make,” says Audrey Looby, a fish-sound researcher at the University of Florida. So far, about 1,000 fish species have been recorded making sounds. You can listen to some of them at a website called FishSounds, to which Looby will soon contribute. Her favorite-sounding fish is the Gulf toadfish.