Aquatic Doo-Wop: Are San Francisco Fish Singing in Harmony?
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The toadfish vibrate the muscles of their swim bladder, creating a foghorn-like sound that alerts females to their nests on the Bay's floor (think of this as the "wanna go back to my place?" plea from the gill-breathing set). But that's not what interests Bland. He contends that large groups of toadfish -- are harmonizing.
"The toadfish seem to be collaborating in their calling," Bland said. "Individuals near each other seem to adjust their frequency, or pitch, to an approximate common value. Like a choir improvising, the group's pitch swings substantially over several hours with the individual fish following the swings, indicating that they are listening to each other and responding."
"Toadfish," incidentally, would make a great name for a band.
Using what an SFSU periodical describes as "complex physics equations" -- as if the field of physics is replete with simple equations -- Bland plans on analyzing the toadfish songs, and studying why communities of the fish sing at different pitches than those a few blocks over.
Listen to the song of the toadfish here.