Hi! I'm new to this forum. I read a few posts about this. I have 6 goldfish in my tank. I am very new to this and don't know much about fish care. I dont know how many gallons is my tank equivalent to. Its almost equal to 22 inches... My goldfish has red spots on their body which look like internal blood marks. They have these from past 1 week. I've been trying to cure them. I have used a blue color medicine which is fungicide but seems like this is not working. I also have a filter which I use for sometime everyday. What are the other solutions to solve this? Please help!! Save my fish