Fish 'farts' a form of communication?

At night, herring squeeze bubbles out of their swim bladders through an anal pore.
The action produces distinctive sounds, resembling a person blowing raspberries or farting.

Fish farts! HAHAHAHAHAHA!

"Why yes Marge. I do speak herring!"

rrrrrrrriiiiiiiiiiiiiiiiiiiiiiiiiiiippppp

There's even a link on that page where you can hear the actual fish fart! It's so beautiful it brought a tear to my eye. I love it. :)