Yellowstripe Goby (Mugilogobius Chulae)

Lemon-striped estuary goby, built for life between mangrove roots and mud.

The Yellowstripe Goby (Mugilogobius chulae) is a peaceful, small brackish-water goby with vivid yellow stripes—ideal for nano species and planted estuary tanks.

• Water conditions: The Yellowstripe Goby is a euryhaline species that does best in stable low-end brackish water, although acclimated specimens may tolerate freshwater. For long-term health, aim for a specific gravity of around 1.003–1.010, a temperature of 22–28°C, pH 7.2–8.4, and moderate to hard general hardness. Keep ammonia and nitrite at zero and nitrate as low as possible, ideally below 20 ppm. Because evaporation raises salinity, top off with fresh RO or dechlorinated freshwater—not salt mix—and use a refractometer to check salinity regularly. A mature, well-filtered aquarium with gentle to moderate flow is ideal. Avoid sudden swings in salinity, temperature, or pH; these small gobies settle quickly when conditions are stable but can stress if parameters fluctuate. If you are acclimating a specimen from freshwater to brackish water, do so slowly by drip acclimation over several hours.
• Suitable tank mates: Choose small, peaceful, brackish-tolerant companions that will not outcompete or prey on the goby. Good options include Endler’s livebearers, small mollies, Indian glassfish, and other calm micro gobies of similar size. Bumblebee gobies can work in a spacious, well-structured tank, but watch feeding because they are also benthic and may compete for the same foods. Avoid large or boisterous fish, cichlids, loaches, puffers, crabs, crayfish, and aggressive bottom-dwellers. Any tank mate large enough to swallow the goby is unsuitable. Keep groups of Yellowstripe Gobies only in a generously sized, heavily decorated aquarium where territories can be divided by caves, driftwood, and plants; if aggression appears, separate or rehome individuals. Because they are small, they can be intimidated by fast-moving tank mates, so provide plenty of visual barriers and resting spots.
• Feeding habits: Yellowstripe Gobies are bottom-oriented carnivores/omnivores that accept a wide range of small meaty foods. Offer frozen or live bloodworm, brine shrimp, daphnia, cyclops, mysis, and copepods, along with small sinking micro pellets. They are often shy at first and may not compete well at the surface, so target-feed near their hiding places and make sure food reaches the substrate. Feed one to two small meals daily, offering only what they can clear in a few minutes. A varied diet helps maintain condition and colour. Avoid large pellets, floating foods they cannot reach, and overfeeding, which can foul the water and cause health problems. If a new arrival seems thin, feed small amounts more frequently and monitor that it is actively hunting and picking at food.
• Care requirements: These gobies are small—typically around 3–4 cm as adults—so they suit nano and species-focused setups. A tank of roughly 45–60 litres is a good starting point for a small group, with a sand or fine-gravel substrate, caves, driftwood, and dense planting for cover. Use a secure lid, as small gobies can jump. Keep the tank cycled and mature before adding livestock, and quarantine new arrivals where possible. Perform weekly water changes of around 20–25% with matched brackish water, clean the filter gently in tank water, and avoid unnecessary medication or copper-based treatments. Observe for signs of stress such as clamped fins, hiding constantly, laboured breathing, or weight loss. Because they are peaceful and small, avoid powerful pumps or intakes that could trap them. With stable salinity, clean water, varied feeding, and quiet tank mates, the Yellowstripe Goby is an attractive and rewarding nano brackish species.