All my water parameters are good. I just did a small pwc earlier today. The angel is very tiny, one inch maybe. I have her/him in my established 10 gallon with a very tiny BGK (2-3 inches) while my 46 gallon cycles (and yes, a tank large enough for them in adulthood is in the works). The little fella is being whooshed around by my filter current and seems to be very weak. It's having a hard time staying upright as well. I moved him to a small tank with a heater and bubble stone for the moment, just so he doesn't get suck to the filter and injured further. I did add some melafix to the tank with the water change because of some slight tatters on it's tail fin. Other than that it looked good, no signs of parasites or fungus. I'm thinking he was sensitive to the treatment. What can I do now?