Ключевые слова: actinopterygii, amazon, amazon river, america, american, animal, animals, aquarium, arapaima, arapaima gigas, arapaimidae, essequibo, fauna, fish, fresh water, fresh water fish, freshwater, freshwater fish, lake, natural, nature, one, one animal, osteoglossiformes, paiche, pirarucu, river, south america, south american, sudis gigas, swim, swimming, tropical, underwater, water, wild, wild animal, wild life, wildlife, zoo,