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|Sound produced||yes, active sound production|
|Type of sound produced||knocks, thumps, clicks|
|Sound production organ||swim bladder, teeth|
|Sound mechanism||not specified, but probably vibration of swim bladder & stridulation of teeth|
|Behavioural context||under duress (electric stimulation)|
|Reference||Fish, M.P. and W.H. Mowbray, 1970|
|Remark||no spontaneous sounds recorded|