The Rainbow Stiphodon Goby, scientifically known as Stiphodon ornatus, is a vibrant and active freshwater goby native to fast-flowing streams in Southeast Asia. Its dazzling coloration, dynamic behavior, and peaceful temperament make it a favorite among aquarists who enjoy small, river-adapted fish that bring both color and movement to planted or hillstream-style aquariums. This goby has a slender, elongated body built for life in currents, with a slightly flattened underside and well-developed pectoral fins that allow it to cling to rocks and navigate flowing water with ease. Males are particularly striking, displaying vivid hues of blue, green, and red along the body and fins, often with an iridescent sheen that shimmers in aquarium lighting. Females tend to have more subdued coloration but share the same streamlined form and delicate fin structure. In the aquarium, Stiphodon ornatus thrives in setups that replicate its natural habitat. Smooth rocks, pebbles, and fine gravel create ideal surfaces for grazing, while moderate to strong water flow and high oxygenation simulate the conditions of fast-moving streams. Shaded areas provided by driftwood, leaf litter, or hardy plants such as Anubias and Java fern help the gobies feel secure and encourage natural behavior. Rainbow Stiphodon Gobies are social and do best in small groups. Keeping multiple individuals together promotes natural interactions, active grazing, and displays of vibrant coloration. They are generally peaceful and coexist well with other small, non-aggressive fish that share similar habitat preferences, such as small rasboras, danios, or other goby species. Feeding focuses on their natural diet of algae and biofilm, supplemented with sinking algae wafers, blanched vegetables like zucchini or spinach, and occasional protein-rich foods such as daphnia or bloodworms. Providing a varied diet ensures they maintain vivid coloration and remain active throughout the day. Breeding in captivity is possible but requires attention to environmental conditions. These gobies are often substrate or rock spawners, and the male guards the eggs until they hatch. Creating areas with smooth stones or fine gravel and ensuring stable water parameters can encourage natural reproductive behavior. The Rainbow Stiphodon Goby is an exceptional species for aquarists seeking color, activity, and elegance in a small river-adapted fish. Its shimmering, multi-colored body, peaceful nature, and interesting grazing behavior make it a striking and rewarding addition to flowing-water aquariums.