Well I added a large JD (about 8", slightly smaller than my Texan) and a large (6") Featherfin Synodontis.
My Texan initially beat up on the JD quite a bit, the Jack didn't even fight back, he just ran. However now they seem to have come to some peace. The JD avoids the Texan, and occupies the space farthest away from the Texan's home (a large rock cave in one of the corners of my tank).
One interesting thing to note though, the Featherfin beat up on the Texan a bit. He has chased the Texan out of his home a few times even to the point of following him across the tank to let him know who is boss. The Featherfin doesn't bother the Jack at all, and sometimes they even hang out together, but he definitely does not like the Texan. I really did not expect the Syno to be the new boss of the tank...
My Texan initially beat up on the JD quite a bit, the Jack didn't even fight back, he just ran. However now they seem to have come to some peace. The JD avoids the Texan, and occupies the space farthest away from the Texan's home (a large rock cave in one of the corners of my tank).
One interesting thing to note though, the Featherfin beat up on the Texan a bit. He has chased the Texan out of his home a few times even to the point of following him across the tank to let him know who is boss. The Featherfin doesn't bother the Jack at all, and sometimes they even hang out together, but he definitely does not like the Texan. I really did not expect the Syno to be the new boss of the tank...