About a year ago I bought 4 baby Lyonsi from Jeff rapps. I was hoping to get a pair. They have grown a lot. My biggest is about 7 or 8 inches who I think is a male and 2 other fish that are about 5. And one is still very small. They are in a 180 6×2×2 tank with a silver dollar a jack Dempsey and a fire mouth. The lyonsi get bullied and the Dempsey and fire mouth. Not sure why they get pushed around so badly. The fire mouth is small like 4 inches. And the jack Dempsey runs the tank he's about 7 inches. If I want a pair should I remove the jack and fire mouth? Should I move the smallest lyonsi to its own tank to try and but size on it? And none of the fish are getting beat up to badly just lots of chasing. Hope this made sense srrry for the long read