Matthew E. Arnegard, Derrick J. Zwickl, Ying Lu, and Harold H. Zakon
Closely related electric fish species from the Okano River of Gabon, collected in the vicinity of the abandoned Fang village, “Na.” Each species is shown along with a recording of its electric organ discharge, which these fish use to communicate with one another and electro-locate prey, much like bats use echolocation. Electric fish recognize other members of their own species using the species-specific waveforms of these heartbeat-like discharges. NIH funding from the National Institute of General Medical Sciences...From FASEB (abbreviated, and boldface mine). I suppose as a basic principle, there's no difference between communicating using electical waveforms vs. communicating using auditory or visual waveforms, but the idea still staggers my mind. Fascinating. I wonder if there is other information they can share, besides just "I am here."