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| Sound produced | yes, active sound production |
| Type of sound produced | squeaks, grunts, growls |
| Sound production organ | swim bladder, enlarged base of first pectoral spine moved within socket by cleithrum |
| Sound mechanism | vibrations by special "spring appartus" (bony shelf supporting swimbladder dorsally) |
| Behavioural context | under duress (caught in hook & line) |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | 5 specimen, outdoor recording (includes background noise of e.g. snapping shrimp & Opsanus tau etc.), recorded with lowpass filter: 1200 Hz |