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Datasheet
| Minimum Tank Size | 40 litres / 10.57 US gallons |
| Maximum Size | 2.5cm / 0.98inches |
General Description
Brachygobius Nunus, commonly known as Bumblebee Goby, is a species often misidentified in the aquarium trade. It can be distinguished by its unique characteristics such as fewer than 30 lateral scales, four black bands on the body, and a black stripe passing through the eye. The species is not widely available, with only a few individuals being present in the international market.
Aquarium Setup
The ideal tank setup for Brachygobius Nunus includes providing numerous hiding spots and cover to create broken lines of sight. A minimum tank size of 40 litres is recommended. The substrate can consist of crushed coral or coral sand for buffering, and marine salt can be added at a rate of approximately 2 grams per liter. Filtration should be gentle, with an air-powered sponge-type unit being optimal.
Behaviour
Bumblebee Gobies are territorial, especially the males, and it is advised not to keep them in a community tank. A group of six or more individuals should be maintained to distribute aggression and encourage natural behavior. Larger numbers make the fish bolder and exhibit more characteristic behaviors.
Feeding and Diet
The common diet of Brachygobius Nunus consists of small live foods like Artemia and Daphnia, which are essential for their nutrition. Although some specimens may accept frozen alternatives, dried products are typically ignored.
Reproduction & Dimorphism
Sexual dimorphism is evident in Bumblebee Gobies, with mature females appearing rounder-bodied, particularly when carrying eggs. The species reproduces through spawning, during which the male will guard the eggs until they hatch.
Habitat and Distribution
This species inhabits both fresh and brackish water environments, primarily found in lowland coastal regions like mangrove swamps, estuaries, and tidal streams. Native to areas around the Ganges River delta in India, reports on its broader distribution vary, but it is believed to be present in India, Bangladesh, Sri Lanka, and potentially Myanmar.