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| Sound produced | yes, active sound production |
| Type of sound produced | scrapes & knocks |
| Sound production organ | swim bladder & teeth (mainly located on upper and lower jaw & tongue) |
| Sound mechanism | not specified but probably stridulation of teeth amplified by swim bladder |
| Behavioural context | under duress (caught on hook & line) |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | recorded with bandpass filter: 50 -2400 Hz, human voices in the background |