Bumblebee goby
Small striped freshwater and brackish gobies from Asia
Brachygobius is a genus of small gobies native to Southern and Southeast Asia. Known for their black and yellow bands, they are popular in the aquarium trade. Males guard eggs in caves, and several species thrive in slightly brackish water.
- Grows to a maximum length of 4 cm
- Males guard eggs in caves for seven days
- Thrives in freshwater and slightly brackish water
- Popular aquarium fish with black and yellow bands
What it is
Brachygobius is a genus of small gobies that grow between 1.5 cm and 4 cm long. They are easily recognised by their striking colour pattern, which features black bodies with pale yellow or orange bands. This appearance resembles that of a bumblebee, leading to their common name. Males are typically slimmer than females and display more vivid colours, often showing orange rather than yellow hues. Females tend to have rounder heads. During spawning, male colours deepen, with some species like Brachygobius doriae developing red bands.
Where it lives
These fish are found across Southern and Southeast Asia. They primarily inhabit freshwater environments but are also adapted to live in slightly brackish waters. This flexibility allows them to thrive in estuaries and coastal areas where salt levels fluctuate. The genus is informally divided into two groups based on size: the smaller dwarf group, which includes Brachygobius nunus, and the larger group, which includes Brachygobius doriae.
How it lives
Bumblebee gobies are oviparous, meaning they lay eggs. In the wild and in captivity, they seek out caves or hollows for reproduction. The males take on the role of guarding the eggs after they are deposited. While specific dietary habits are not detailed in the provided text, their small size suggests they feed on tiny invertebrates. In an aquarium setting, they can live for approximately five years if kept in good conditions.
Breeding and life cycle
Spawning involves the female laying eggs in a cave, which the male then guards. A single clutch contains around 150 to 200 eggs. The eggs hatch after about seven days. Once hatched, the fry remain in the cave for another five to seven days before becoming free-swimming. During this breeding period, the males exhibit deeper colours, with the orange bands of some species turning red to signal readiness.
Fish and people
These gobies are popular in the aquarium hobby due to their small size and attractive markings. A tank of about 40 liters can comfortably house a dozen specimens. The most commonly traded species belong to the Brachygobius doriae group, though the smaller Brachygobius nunus is also available. It is important to note that while many books refer to Brachygobius xanthozona, this species is rare in the wild and is not part of the commercial trade.
Questions people ask about Bumblebee goby
How big do bumblebee gobies get?
They are very small fish, ranging in size from 1.5 cm to 4 cm in length. This makes them suitable for smaller aquarium setups.
Do bumblebee gobies need salt water?
They are primarily freshwater fish but are also found in slightly brackish waters. They can adapt to low salinity levels in an aquarium.
Who cares for the eggs in bumblebee gobies?
The male guards the eggs after they are deposited in a cave. He protects the clutch until they hatch, which takes about seven days.
Which bumblebee goby species are sold in shops?
The most common species in the trade belong to the Brachygobius doriae group. The smaller Brachygobius nunus is also traded occasionally.
Good reading and sources
The facts on this page come from the Wikipedia article "Brachygobius", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.
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