tranquil aquarium scene with colorful zebra danio fish swimming among lush aquatic plants. zebrafish, danio rerio

zebrafish danio rerio aquarium zebra fish aquatic plants swimming tranquil colorful underwater freshwater tank pet vibrant nature hobby environment green blue fins gills ecosystem habitat peaceful serene hobbyist captive biodiversity light reflection serenity water tropical marine flora fauna algae decoration background tranquility ornamental scale wildlife natural small delicate graceful