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Click here to download the sound file.| 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 |