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, thumps & knocks |
| Sound production organ | teeth & swim bladder |
| Sound mechanism | stridulation of teeth, probably amplified by swim bladder |
| Behavioural context | small scrapes when netted & handled, weak to loud thumps & scratchy knocks with electrical stimulation |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Remark | Genus characterized by expansion of second interhaemal to form a hollow cylinder into which the posterior end of the swim bladder fits. Recorded with bandpass filter: 75 -1200 Hz, recording amplified by 6 dB |