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Katenhuber, E.; S. C. F. Neuhauss. Acoustic Communication: Sound Advice from Piranhas. Current Biology. 20 December 2011, 21 (24): 986–988. PMID 22192829. doi:10.1016/j.cub.2011.10.048.
Onuki, A; Ohmori Y.; Somiya H. Spinal Nerve Innervation to the Sonic Muscle and Sonic Motor Nucleus in Red Piranha, Pygocentrus nattereri (Characiformes, Ostariophysi). Brain, Behavior and Evolution. January 2006, 67 (2): 11–122. PMID 16254416. doi:10.1159/000089185.
Millot, S.; Vandewalle, P.; Parmentier, E. Sound production in red-bellied piranhas (Pygocentrus nattereri, Kner): an acoustical, behavioural and morphofunctional study. Journal of Experimental Biology. 12 October 2011, 214 (21): 3613–3618. PMID 21993790. doi:10.1242/jeb.061218.