I've got a 29 gallon tank with 4 pearl danios, 3 shwartza cories, and 1 female blue gourami. Since I've added the cories the gourami has become very hostile towards them and picks on them all the time. Would adding a male gourami fix this at all?. What about more cories? Or will the Gourami just settle down with time? The cories have only been in there about a week.

You mite try adding another female or 2. A male may help, I have 1 male and 2 female Blue Gourami in a 29 gallon and they don't bother the other fish normally. The male will chase other fish away from his area of the tank. That may be the case with your female.