| are hearing sensitivities of freshwater fish adapted to the ambient noise in their habitats? | several groups of fishes, among them two thirds of all freshwater fishes, have developed hearing specializations that enhance auditory sensitivity and broaden frequency ranges compared with hearing non-specialists (generalists), which lack such adaptations. it has been speculated that the enhanced sensitivities of these so-called hearing specialists have evolved in quiet habitats such as lakes, backwaters of rivers, slowly flowing streams or the deep sea. to test this hypothesis, noise levels an ... | 2005 | 16155225 |