If your fish seem to be bleeding, the only thing I can think of is a disease called Hemorrhagic Septicemia, which is basically internal bleeding. The root cause is poor water conditions, such as high ammonia, nitrates and nitrites. The first thing I'd do is test your water. Ammonia and nitrites should be at 0 or very close, and nitrates should be lower than 20ppm.

Other than that, I'm not sure.

"In the age of information, ignorance is a choice." - Donny Miller