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| Sound produced | yes, active sound production |
| Type of sound produced | weak scrapes & loud grunts |
| Sound production organ | pharyngeal teeth & swim bladder |
| Sound mechanism | not specified but probably stridulation of teeth amplified by swim bladder |
| Behavioural context | under duress (manual stimulation) |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | species is known to produce other sounds (thumps, rasps, scrapes) under duress or alarm |