Ключевые слова: actinopterygii, animal, animals, aquarium, asia, asian, common rudd, cyprinidae, cypriniformes, europe, european, fauna, fish, fishes, freshwater, freshwater fish, freshwater fishes, lake, natural, nature, river, rudd, scardinius, scardinius erythropthalmus, swim, swimming, two, two fishes, underwater, water, wild, wild animal, wild life, wildlife, zoo,