Please be patient while sound file is loaded. You may have to increase volume settings.
If you did not hear the sound. Click here to download sound file.
| Sound produced | yes, active sound production |
| Type of sound produced | escape thumps, weak knocks, louder bumps |
| Sound production organ | swim bladder |
| Sound mechanism | not specified |
| Behavioural context | under duress (electric stimulation) & immediately after |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | recorded with bandpass filter: 30 - 1200 Hz, recording amplified by 6 dB |