duanes
, does the fish in post #11 look like it may have the beginning of columnaris or duck lips?
Hard to tell from the photo, its not clear enough in detail.
I have had Petenia splendida get a dislocated jaw.
I fixed it by gently massaging the jaw back into place, with thumb and forefinger, and it went on living after the adjustment, healthily.
If it is colomnaris, the jaw begins to atrophy and is impossible to reset, it is immoveable.
The fish usually just hovers, and cannot eat, its colors often intensify as the disease progresses.
Below is a Mayaheros beanii, with the start of Columnaris.

As the disease progresses, the jaw extends more and more each day.
Water temps of 82'F and above make the disease more virulent, and the infection progresses faster.

I have heard of success treating with Gram negative bacterial antibiotics, but I "never" had success once the jaw became atrophied.