Ключевые слова: animal, aquatic, biotope, bottom, bullhead, cold, common, cottidae, cottus, deep, discovery, diversity, diving, ecosystem, edible, eurasean, europe, european, eutrophic, fish, fishery, fishing, fresh, freshwater, gobio, ground, lake, muddy, nature, one, pattern, pond, prey, river, scorpaeniformes, scuba, sculpin, sea, single, species, swiss, switzerland, underwater, underwaterphoto, underwaterpicture, vierwaldstttersee, water, zrichsee, zugersee,