Ключевые слова: animal, aquatic, barbel, biotope, bottom, bubbot, burbot, cold, deep, discovery, diversity, diving, ecosystem, edible, eelpout, eurasean, europe, eutrophic, fish, fishery, fishing, food, fresh, freshwater, gadiformes, ground, lake, lota, lotidae, nature, one, pattern, pond, river, scuba, sea, single, species, swiss, switzerland, underwater, vierwaldstttersee, water, zrichsee, zugersee,