General information about Bumblebee Gobies (Brachygobius xanthozonus)
I purchased 4 bumblebee gobies, which requirements do they have?
Bumblebee Gobies (Brachygobius xanthozonus) are rather fastidious and prefer a salt addition to the water. They are in fact only suitable for a species-only tank generously equipped with viewing barriers (rock constructions, caves) with approx. 0.5 - 1 % sea salt (500 - 1000 grams per 100 liters). They often do not accept dry food; however you can try sera vipagran or soaked sera granumarin.
My male Betta looks as if being nibbled at since I added the gobies. Can they be the culprits?
This is not very likely, but the gobies are not very suitable for keeping together with Bettas (nor with other fish from pure freshwater) anyway. Therefore you should set up a suitable brackish water tank only for them.
Dr. Bodo Schnell