NY Times cites recent research by several scientists working in the field.  Be sure to go to the
video link!  (oops, you may notice the NY Times misidentified some of the fish pictures).  

The story was also picked up on Comedy Central with a clip from the Colbert Report.
(Go to the video link labeled Tip/Wag Rain).  http://www.comedycentral.com/colbertreport/videos.jhtml?episodeId=164900

Click on Rodney Rountree’s Soniferous main page to find out more about passive acoustics and fish sounds. Cusk-eel information can be found on the cusk-eel page and in the "Listening to Fishes"  e-book.