So I bought 7, small, bit smaller than one inch big silver dollars on sunday, they seemed fine and had healthy appetites. Then on monday I noticed that one of them seemed to have a swim bladder malfunction. Kept trying to swim downwards, and was going all over the place upside down, sideways.. Then would float on the surface and just stay there until I touched him, then it started all over again. ,Now on tuesday morning two more SDs are doing the same thing, they aren't dying, just all seem to be suffering from the same boyancy issue. All my other fish in the tank, nandus nandus, archer, two convicts, african knife and pleco are all fine. They are normal. I do a 30 percent water change every week, I did one the day before I put the SDs in, I have a 1500 litre filter on my 60 gallon.. It is also a planted aquarium.. Why is this happening?? Will they come right??
