On the contrary, Neither fish nor fish spawn is disturbed. Even water fleas and other micro biotopes remain unaffected. Only algae and pathogenes vanish. Additionally the disturbing gas vesicles burst in the fish gills, which have accumulated through dead algae. Thereby the fish live healthier.

Most of the fish hear between (and speak) between 400-600 Hertz. A few types however, eg the carp fish, characin and catfish, developed in their Phylogency a chain of ossicles of swim bladder to the internal ear. They director the oscillations of the swim bladder directly to the ear and hear up to 1000 Hertz.

 Sense of Hearing of fish 28,17 Kb