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| Sound produced | yes, active sound production |
| Type of sound produced | grunts |
| Sound production organ | swim bladder& teeth (located on jaws, vomer & palatines) |
| Sound mechanism | high-pitch grunts produced by swim bladder in conjunction with teeth (mechnism not further specified) |
| Behavioural context | under durees (when caught in seine or during handling) |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | recorded with highpass filter: 30 Hz |