Frank_Cora wrote in
oups.com:

One of my weather loaches seems to have some kind of sore on his
face.

He's had it for a few weeks now & appeared as if something had taken a
chunk out of the side of his face (possibly maybe one of my sucking
loaches)

I've tried a few things in the tank Medizin P & Myxazin. Now he's in
a separate tank and i'm trying Octozin. But it just doesn't seem to
be healing


Could be a wound. I had that happen recently to a dwarf gourami from a
school of them in a tank with 5 yo-yo loaches. If the wound is very
deep, or located near or on a gill flap or eye, it might not make it.
Most other wounds to the main body mass will heal fine, but not prettily
(It might have a battle scar for life). The gourami's wound was over its
eye, and its pretty deep, but now that he's out of the other tank, he is
not stressed and is eating well. I moved it to a 10 gallon platy fry
tank to re-coup. The scar tissue in the wound went from slightly pinkish
and fuzzy to white and shiny, and its appetite returned as this
progressed. The first five days in the fry tank, it harldy ate at all.
I don't treat the water (tanks got fry in it), but I keep the NH3/NO2/NO3
at 0/0/10 ppm with large-ish water changes, since its a small tank.

It doesn't appear to be a fungus.

I would be grateful for any suggestions as to what to do with him


I'd stop the meds. If you've run a full med course, you've prevented any
fungus or infection, and with very-good water parameters, it'll either
recover from the wound, or succumb to it. Continuing the meds may just
stress it out more. Give it plenty of hiding places, and keep giving
plenty of opportunities to feed. Spoiling it with a favorite food
(frozen bloodworms?) might get its interest in eating back up, which can
help it recover.

Regards,
DaveZ