Hi Everyone,
I bought two Bumblebee Gobies for my community tank about 4 months ago. I didn't realize when I purchased them that they were brackish. One died within days of buying him. The second has been in freshwater the entire time and is thriving.
I think the previous posts are correct that live bait will do the trick but it is possible to feed them frozen brine shrimp. If they will not accept frozen brine shrimp now, feed them live food till they are stronger. Then try switching from live to frozen every other day till they start to accept frozen. Shaking the frozen cube into the water current of your filter might trick them into thinking the dropping food is live. It took a month or two but now my Goby will pick at the frozen cube from my hand.
Good Luck, mouse