red cap oranda

Hi everyone, My red cap oranga goldfish has been having these red spots. It started still on her red cap and now it spread to her body. The change happened in the past 5 months. Can you tell me is it a reason for concern and what can I do to help the fish. Thanks

I was checking all of my tanks when I got up today, and one of the two goldfish I picked up is in sorry condition. His tail is a bit shredded, and the back 1/4 area of his body is a brownish orange, the darkest part around his anus. He is swimming a lot slower today than yesterday, and I saw one...