We have lost over 40 fish in the last couple of weeks. All cichlids! They stopped eating, then developed small cottonball like specks on their entire body. From there red bruise like blotches appeared, starting by the fins and spreading over the body. They clamped their fins and lost their ability to stay upright. Soon after this, they died. Can't find anything on the internet to help us stop this. Looking for advice. We have a catfish and a pleco in the same tank. They have not been affected but we are wondering if they could carry the problem if we put them in a different tank. Any help is greatly appreciated