https://makezine.com/article/science/the-siren-song-of-gnathonemus-peter/
The siren song of Gnathonemus petersii - Make:
May 28, 2009 - OK, so, it's not exactly a song. It's more like a clicky, morse-codey, geiger-countery sort of buzz. Nonetheless, it is generated by an electric fish, and
the siren songgnathonemus petersiimake