So I got a young gold gourami today and have since discovered that he/it is a HUGE bully. All it does is chase my other fish around... including a kissing gourami over twice it's size! It is clearly stressing out my other fish. Any suggestions on what to do? I'm kinda annoyed that of all my semi-aggressive fish, he's the only one displaying aggression (I wish they'd all just get along haha).