I've had my blue/three spot gourami for about 3 months now and am finally gonna upgrade him from a 10 gallon hex to a 20 gallon tank. I was wondering, now that I have more room, if there are any other species that get along with blue guoramis? Or if I'm just better off getting a few others just like him. He seems a little territorial though, he likes to smack the underwater thermometor with his tail a lot, which makes me wonder if he would even get along with other fish in his new surroundings. Any ideas/suggestions?