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| Sound produced | yes, active sound production |
| Type of sound produced | thumps, knocks, booms, escape sounds |
| Sound production organ | swim bladder |
| Sound mechanism | not specified |
| Behavioural context | loud booms from large specimen, weaker thumps from small fish under duress (manual stimulation), escape sounds & low knocks with electric stimulation |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | recording amplified by 6 dB |