Hi,
I have a 22 gallon fish aquarium with 2 regular old goldfish. I have had them now for about 3 years. Last night when I was feeding them I noticed that my one goldfish is developing pink spots on her dorsal region. She doesn't appear to act any different than usual, but I want to make sure that she isn't going to get worse. Does anyone know what this is or how to take care of it?

Do you know your parameters? I don't know what it could be, myself. But the red box at the top can help with the diagnosis. Fill it out as best you can.

Almost every problem a fish might have can be traced to the water they're living in.

As a rule of thumb, any time I see something unusual going on with my fish the first thing I do is a check the water for ammonia, nitrites, nitrates, and PH. Then I do a 30% water change with dechlorinated temperature matched water even if the parameters look fine.

If you don't have the necessary test kits ... Do a 30% water change and try and get the test kits.

Rick

I definitely agree that 99% of the time fish problems are caused by water quality! So that would be the first thing to check.

Is your fish white? Sometimes on white fish you can see through some of the scales and it can cause them to have almost a pinkish tinge. If this is how the fish has always been, and maybe youre just noticing it now that it is larger, its probably nothing to worry about. If its definitely different than a few days ago thats probably something to take note of.

I would also recommend a water change. If its been several months since your last change only change about 10% so as not to shock the fish.

I also have the same problem with my black moor.. see new post..

I thought it might be bacterial... is there anything more pro-active we can do? Meds yet?

if anything it sounds more like a parisite. then bacterial. try a med that treats baterial, fungal and parisites. poly gaurd will do that. B)