The Yellowstripe Goby, scientifically known as Mugilogobius chulae, is a charming and petite species found in coastal and brackish waters across parts of Southeast Asia. Known for its delicate appearance and peaceful temperament, this goby is a favorite among aquarists who enjoy keeping small, active fish that exhibit both subtle beauty and fascinating behavior. This species is aptly named for the striking yellow stripe that runs along each side of its slender, translucent body. The stripe may vary in intensity depending on mood and lighting, sometimes appearing as a bright golden band that glows against the goby’s pale silver or beige coloration. The fins are usually clear or slightly tinted, and males often display a richer tone with more pronounced markings, particularly during courtship. Under good lighting, these gobies shimmer with a soft iridescence that enhances their refined, understated beauty. In the aquarium, Mugilogobius chulae thrives in environments that reflect its natural brackish or lightly saline habitats. A tank with fine sand or smooth gravel substrate, scattered rocks, driftwood, and patches of aquatic vegetation provides the ideal setup. These gobies appreciate calm water flow and clear, well-oxygenated conditions. Although they can adapt to purely freshwater aquariums, they tend to show their best colors and vitality in slightly brackish water, where they behave more naturally. The Yellowstripe Goby is a gentle and social fish, well-suited for small community aquariums with other peaceful species. They spend much of their time near the bottom or mid-levels, perching on rocks or leaves and making short dashes to feed or interact. They do best when kept in pairs or small groups, as they are more confident and active in the presence of their own kind. Watching them sift through the substrate or display subtle social gestures is both calming and fascinating. Feeding these gobies is straightforward, as they readily accept a range of small foods. A diet composed of high-quality micro pellets, crushed flakes, and regular feedings of live or frozen foods such as brine shrimp, daphnia, or bloodworms keeps them healthy and enhances their coloration. Because they are deliberate feeders, it’s best to avoid keeping them with overly competitive tank mates that might outcompete them for food. Breeding Mugilogobius chulae in captivity has been reported but remains relatively uncommon. Like many gobies, they are cave or crevice spawners, with males taking on the role of guarding the eggs until hatching. Providing small shelters such as pieces of PVC or rock crevices can encourage breeding behavior if conditions are favorable. The Yellowstripe Goby is a delightful addition to well-maintained aquariums, bringing a touch of subtle elegance and gentle activity. Its calm nature, golden markings, and unique goby behaviors make it especially appealing to aquarists who value smaller, peaceful fish that thrive in naturalistic setups. With stable conditions and attentive care, this little gem brings quiet charm and understated beauty to any aquatic display.