The fish that sounds like a screaming baby

Toadfish makes non-linear sounds for urgent calls

source: New Scientist vol 210 no 2812, May 14 2011 p15

Western Pacific three-spined toadfish can produce non-linear sounds for urgent calls. Other species of fish can produce non-linear sounds, but three-spined toadfish can make more complex sounds using their swimbladders. Their calls have been studied by Aaron Rice from Cornell University, New York.
FI,BC