one died from the 3tank, so i put the other 2 in with the 4.
now there is 1 tank wih 6 fish...This is where the problem started.
The largest goldfish started to act funny/ strange. E.g. He would shake his head fast and go a crazy for a sec...freaky.
I woke up the next day and he had a redish/white spot on back. looks like a bruise.
I have removed him from the tank and placed him in his own tank. Only now the other fish are acting a little starnge. Staying at the bottom, Having strange fast shakes(fits-i dont know)
Im worried. The water is fresh and clean. WHAT SHALL I DO..
please could you help me

