Ключевые слова: acipenseridae, animal, animals, aquarium, aquatic, background, biology, captivating, close, conservation, dark, detail, display, endangered, environment, exhibit, exotic, eye, fin, fish, freshwater, gill, green, ichthyology, life, marine, mouth, mysterious, nature, oceanarium, old, pisces, rusty, saltwater, scale, sea, species, sturgeon, submerged, swimming, tank, texture, themes, underwater, up, vertebrate, wheel, wildlife, world, zoology,