welcome to the tank..I am assuming you are talking about dwarf blue gouramis...these can be very aggressive towards males there own species (the are related to betta's)and through my experience (and some others on here as well) 2 do not do well together. With DG's the males are the most common in petstores due to the females being kinda drab in color. I know that most sites say keep them in pr's but from what I can research they either want to just sell you more fish or they mean a m/f pr. If you keep 2 males together I would expect to find one dead after a few weeks. If you search for dwarf gourami on here or go under my profile I have in the past posted links on DG's care. When my first dominant male killed off the other male, I reeplaced it..same thing happened except the new one became the dominant and killed off the original. He then started picking fights with some juvi parrots (hybrids) that where temp. housed with it. He would relentlessly harass them even after the would team up and kick his butt. After about 3 days he ended up dead but he was always the one starting the fights, they just finally finished it.