Never used them before but I have heard cysts from Salt Lake are the best for hatcheries. Bumble Bee Goby's are Brakish fish. They can get real nasty to. Sometimes semi-aggressive fish don't display their aggressivness until they are mature so they may seem OK to keep with community fish. Sometimes it works out sometimes not. I do know that they "do better" in Brakish water. They are more lively and will be healthier. here's a good link to a profile below.

Sorry forgot to add the link. here 'tis

Here is a link that might be useful: Bumble bee goby profile @ Badmans