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Sound produced | yes, active sound production |
Kiểu âm thanh phát ra | knocks |
Cơ quan phát ra âm thanh | swim bladder |
Sound mechanism | not specified |
Bối cảnh về tập tính | when alarmed |
Reference | Fish, M.P. and W.H. Mowbray, 1970 |
Chú thích | recorded with bandpass filter: 30 - 1200 Hz, recording amplified by 6 dB, noise reduction filter applied |