One of my cichlids(melanochromis auratus) got beaten up a bit on the tail so I took her out and put her into a 10 gallon(no filter, air stone basic decor and gravel) The tail was red and fins nipped pretty badly-now she sits on the bottom of the tank and doesn't move much. A white kinda cloud like haze is built up around the tail only. Is there something I should know at this point to help the fish? What is that haze buildup?