So, I was given a pair of pbass, and it turns out they were large enough to go into the 600 with the big kitties.

The female is showing some nice colors, but I think the male will need some TLC before his colors are going to come around. They were in with another pair, and from what I understand the other male was dominating the tank. He has some HITH, so I think he has a ways to go before he's 100%. I think just not getting whomped on will help him, but I also fed them some shrimp stuffed with medicated food last night. It will be interesting to see where he's at over the next couple weeks and months. They appear to be enjoying their new home tremendously, seem very relaxed, and are very interested in people.
Here are a few pics from last night a couple hours after the move (and no they aren't great, but they're photos)

:
The male... I'll post updated photos in a couple weeks to see how he is progressing.
The female...
And here is a very fat TSN who ate not only her share of the large pre-introduction dinner, but also the hybrid's share of the tilapia. So if she is about 26-27", how big do you figure that belly to be?
And not to be left out, my hybrid wondering why I wasn't focusing on him...
Love this big, nicely colored tail!