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| Sound produced | yes, active sound production |
| Tipo de som produzido | barks & scratchy burst |
| Órgão utilizado na produção do som | pharyngeal teeth & swim bladder |
| Sound mechanism | not specified, but probably pharyngeal teeth stridulation amplified by adjacent swim bladder |
| Contexto comportamental | when netted or mildly alarmed |
| Reference | Fish, M.P. and W.H. Mowbray, 1970 |
| Nota | recordings of six specimen in order of increasing size |