Ключевые слова: animal, aquarium, behavior, chordate, culaea, develop, development, display, dorsal, drop, egg, embryo, environment, eye, fin, fish, gasterosteidae, gasterosteus, hatchery, ichthyology, incubation, interest, kidneys, larvae, life, light, macro, magnification, male, marine, mating, membrane, micro, natural, nature, nest, oil, old, phase, pisces biology, protect, science, scientific, sea, spine, submersed, swimming, tail, territorial, vegetation, vertebrate, water, wildlife, zoology,