Hello, I have a yoyo loach problem. I have 2 of them and they were completely happy and playing 2gether, then I had an ich problem with some neons (loaches showed no sign of ich). I used half dosage bc of the loaches the ich was gone but one of the neons died and I saw a loach eating him. Then all of a sudden my one loach had a red mouth almost like lipstick. went to lfs with a water sample and they said nothing to be concerned about. They then told me to get melafix the redness has cleared up but the fish is sluggish, and constantly being chased by the other loach. I have not seen him eat and its been almost 2 weeks since I noticed he was not normal. seems as if some of his bristles are shorter then the other one. He def lays down a lot and I know he is not dead bc he keeps popping up and has gill movement. is he a goner or is there something else I can do to help him? tank is 45 gal, multiple hiding caves, other fish are tetras and dwarf neon rainbows. if I somehow lose this one should I try to find more and would zebra loaches be ok with the king of the tank healthy yoyo.