Didn't I read earlier in the thread she said she got the bass from an LFS? If it were collected locally and I even knew where she was located (obviously not a distant planet) I could have drawn similar conclusions. BTW..that "abomination" has been collected by many people thinking that it was a LMB. I was not trying to downgrade your fish, but merely ask something I was interested in knowing. I am probably 1 of very few people on this forum that know that there are at least 14 different "strains" (not species) of bass in the genus Micropterus and can identify any of them. Other than the redeye subspecies (there are at least 4), the Northern LMB and the Kentucky spot (not only in Kentucky) are the most easily confused of all the bass strains (its easier to tell the Kentucky spot from the Alabama spot). I'm sorry that you went on the defensive, but my intent was to satisfy my own indulgence in getting a better look at the bass from an angle that would be easier to ID...for me...not you. Congratulations! You got defensive for no reason.
Also, I've kept a yellow perch (Perca flavescens) for a number of years with other agressive fish. I kept mine at 78 degrees because it was with tropical fish like a red bay snook and a swordspine snook. I even at one point had an Alabama spotted bass in there with them. The perch was introduced at about 4" and lived until he added about 10" more to his total length. I moved from FL to AL and lost him in the move. His demeanor towards other fish that could not fit in his mouth was great. Not overly aggressive at all. However, I would be a little more worried about how the other fish in your tank would treat them. It looks like you have enough fish in your tank make it a lot easier to introduce them without incident. The perch might treated similarly to how your first gar was. After a little while should be ok when everything settles down though. They should be ok to introduce.
Here he was right before my move to AL: