The Bumblebee Goby is a tiny bottom-dwelling fish with striking yellow and black bands, ideal for nano aquariums. Requires live food and hiding spots
Overview
Brachygobius doriae is a small bottom-dwelling fish from the Gobiidae family, commonly known as the Bumblebee Goby due to its distinctive pattern of alternating yellow and black bands. In the wild, this species inhabits coastal waters of Southeast Asia, primarily on the island of Borneo and surrounding regions. These fish are found in shallow river areas, mangrove zones, and estuaries where freshwater mixes with seawater.
Adults reach a size of 3-4 cm, making them an excellent choice for nano aquariums. The body is compact and slightly elongated, with fused pelvic fins forming a characteristic suction disc typical of gobies. This disc allows them to grip firmly onto rocks and decorations, which makes their behavior particularly entertaining to observe. With proper care, Brachygobius doriae lives for 3-5 years.
It is worth noting that several closely related species are often sold under the common name "Bumblebee Goby," including Brachygobius xanthomelas. Distinguishing between them without experience can be difficult, but B. doriae stands out for its ability to thrive in both fully fresh and slightly brackish water.
Tank Requirements
A group of Bumblebee Gobies requires an aquarium of at least 40 liters. Despite their miniature size, a smaller tank is not recommended: these gobies are territorial and need space to establish individual zones.
Optimal water parameters: temperature 24-28°C, pH 6.5-7.5, general hardness (GH) 5-15. Brachygobius doriae adapts well to fully fresh water, but adding a small amount of marine salt (1-2 g/L) can improve their well-being and approximate natural conditions.
Fine sand or small pebbles work best as substrate. Be sure to provide plenty of hiding spots: small clay pots, coconut shell halves, rock piles, and driftwood. Each fish needs its own "cave." Hardy plants such as Java moss and Anubias can be used to create additional cover and improve water quality.
Water flow in the aquarium should be moderate. Bumblebee Gobies are bottom dwellers and struggle with strong currents. Good filtration is essential, but the filter outlet should be directed along the glass or diffused to avoid excessive water movement near the bottom.
Feeding and Diet
Feeding is one of the main challenges when keeping Bumblebee Gobies. They are carnivores and in most cases refuse dry foods. The diet should be based on live and frozen foods: brine shrimp nauplii, daphnia, cyclops, small bloodworms, and micro worms.
Feed the fish 1-2 times daily in small portions. Bumblebee Gobies are slow eaters that pick food from the bottom, so in a community tank they often go hungry as they cannot compete with faster tank mates for food. This is why many experienced aquarists recommend keeping them in a species-only setup.
Some individuals may eventually accept high-quality sinking pellets designed for carnivorous fish, but this is the exception rather than the rule. Do not count on this when planning their care. Live food is an essential requirement for maintaining health and vibrant coloration.
Care and Maintenance
Bumblebee Gobies are sensitive to water quality, making regular aquarium maintenance critically important. Weekly water changes of 20-25% help maintain stable parameters and prevent nitrate buildup.
Monitor ammonia and nitrite levels, which should always read zero. Nitrates should ideally be kept below 20 mg/L. Regularly check temperature, pH, and hardness, especially when using marine salt additives.
Clean the filter in drained aquarium water as needed, but not too frequently to avoid disrupting the biological balance. Aeration is recommended, as these fish prefer well-oxygenated water.
When proper conditions are maintained, Bumblebee Gobies rarely fall ill. However, deteriorating water quality makes them susceptible to fungal and bacterial infections. The first sign of trouble is usually fading coloration and decreased appetite. If you notice these symptoms, check water parameters immediately and perform an unscheduled water change.
Compatibility
Brachygobius doriae thrives best in a species-only aquarium. The fish are territorial and show moderate aggression toward conspecifics, but in groups of 6 or more, the hierarchy is distributed evenly and conflicts are limited to ritualized displays.
If you still wish to add tank mates, choose small, calm fish that will not compete for food on the bottom. Suitable options include small rasboras such as the Harlequin Rasbora, or small rainbowfish that occupy the middle and upper water layers. Small Pygmy Corydoras can also make decent companions.
Avoid keeping Bumblebee Gobies with large or aggressive species, as well as active fast-swimming fish that will intercept food and cause stress. Large cichlids, barbs, and paradise fish are poor choices as tank mates for these miniature gobies.
Breeding
Breeding Brachygobius doriae in a home aquarium is a moderately challenging task, quite achievable for an aquarist with some experience. Sexual differences are subtle: males tend to be slightly slimmer and more colorful, while females ready to spawn become noticeably plumper.
To stimulate spawning, raise the temperature to 26-28°C and slightly increase water hardness. Narrow hiding spots such as small tubes or overturned pots with an opening are essential, as spawning occurs inside these shelters.
The male lures the female into a chosen hiding spot, where she deposits 100-200 small eggs on the ceiling or walls of the cave. After spawning, the male takes over guarding the clutch, actively fanning the eggs and removing any that have died. The female should be removed at this stage to prevent conflicts.
The larvae hatch in 3-5 days depending on temperature. For the first few days, the fry feed on their yolk sac, after which they need to be fed infusoria or specialized liquid fry food. After about a week, you can transition to brine shrimp nauplii. The fry grow slowly and require clean water with minimal current. Regular small water changes (10-15%) are the key to successfully raising the young fish.