Female can't use right pectoral fin

[Auratus]

It turned blood red (it used to be blue) and now it seems to be stuck to her side, almost like she has a broken fin and she's not using it. Anyone know what could cause this and what meds I should use to treat her? There is no sign of fungus on it or anything holding the fin to her body.

I'll try to get a pic in the morning.

 

[Nuttygal! :0)]

I'll try and help you out when you post a pic, but for now, I can't really say...
What other fish do you have in your tank?

 

[Phantom Thief]

Could this be it?

Septicemia: A fairly rare to common in all tropical and coldwater fish. It is caused by bad tank conditons and is very hard to cure if not impossible. Bacterial Hemorrhagic Septicemia can be diagnosed by red streaking of the fins and body and once this disease progresses, ulcerations and body sores start to appear. There is significant loss of appetite, lethargy, loss of motor functions in the later stages of the disease.

Taken from http/www.fishforums.net/index.php?showtopic=10266

P.T.