HI Lilly Pad,
Well you definitly know your stuff. Its a 70 gal, the frontosa is doing fine, actually going to the top of the tank to eat with the rest of the cichlids, but noticed that the red tail shark is getting the wrost end of the stick. Which i find extremly strange, because everyone I know with a cichlid tank has atleas 1 red tail shark in there. My inlaws have a south african tank and a red tail shark for about 2 1/2 years now and everything has been great. They told me that once the Jack Dempsey was attacking the red tail and he got seriously injured but came back.
I always rearrange the tank when i introduce a new fish. The way it goes is once a week i do a 25% water change (every friday) and then once a month i will take out all the rocks and clean under there and re arrange the rocks back. It just so happened that when i got the front i had to do a "big" water change. (rearrange the rocks) Also, when i introduce a new fish, i keep all the lights off for 24 hours, as to reduce the stress, as well as I feed the cichlids before introducing the new fish. Also, not sure if this helps or not but whenever I do a water change I add salts to the tank. Apparently it is to help calm them down as well as get rid of any parasites (cross your fingers as to there not being any) and aslo to help restore fin damage, if there is any. Oh and sometimes when I introduce a new fish I will throw in a feeder fish to get their attention off of the new cichlid. So far as worked without any problems.
The front is by no means full grown, he is about 3 - 4 inches right now with the rest of the tank being at 2 inches. I have heard the fronts can be pretty slow growers so hopefully the rest of the tank won't out grow him.
I feel that if worse comes to worse and the front ends up by getting attacked I will have to put him into my 45g tank (Not currently set up, needs all new equipment) But, hopefully that day won't come.
Thanks everyone, sorry for the long post.