I am new to the site and a fairly new aquarist. I have an opaline gourami in a 3-gallon tank (soon to be moved to a 10-gallon when it's finished cycling). I have had him for 18-months (inherited). He has never gotten along with any other fish, even another opaline gourami. He has been through some of the worst conditions (ie: left in tank for 4 weeks without food-not by me of course, dropped numerous times when switching tanks, etc.), but he still perseveres. I would say he is extremely hardy. My LFS said he would never be unaggresive with other fish and to bring him in, they would take him. I really hate to give up on him, though, after all he's been through. What are your opinions?