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 | thumps & knocks |
| Sound production organ | probably swim bladder & pneumatic duct |
| Sound mechanism | vibrations, possibly some sounds from escape of swim bladder gas through pneumatic duct |
| Behavioural context | not specified (possibly under duress) |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | sounds produced under duress (stimulus not specified for this recording) |