So I got another one, put the two together, and my original is beating up on the new one. I thought that it might be territorial, so I rearranged the tank. Didn’t work. Are they establishing a hierarchy? The new one is a little stressed, so I’m wondering if it’s time to go to plan b. They were in a 20g long, a quarantine tank for deworming and stuff. Plan b is a 29g by himself. They were going to get moved to their 75, probably by the weekend. Maybe the extra room is all they need. There’s no damage being done, but the new one is dark and hiding. It’s been 5 days that they have been together with little change.