Gouramis are the same family as bettas and do not generally tolerate others of their kind too close. The general exception to that seems to be chocolate gouramis.
Dwarf gouramis do make fine community fish. They will work best in groups if the ratio is 1 male to 2 or more females. But female gouramis are hard to find right now as they are not colourful and attractive like the males (well I like the look of them but the people that sell them don't think most would enjoy owning them).
If you are getting a 50 gallon tank then I would wait until that time and the tank is setup. Then add any new gouramis at that time.
Dwarf gouramis do make fine community fish. They will work best in groups if the ratio is 1 male to 2 or more females. But female gouramis are hard to find right now as they are not colourful and attractive like the males (well I like the look of them but the people that sell them don't think most would enjoy owning them).
If you are getting a 50 gallon tank then I would wait until that time and the tank is setup. Then add any new gouramis at that time.