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 | scrapes |
| Sound production organ | teeth |
| Sound mechanism | scraping |
| Behavioural context | under duress |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | sounds only emitted after physical stimulus (prodding), recorded with highpass filter: 150 Hz |