Bought this wild female fish, It's laid eggs in the past, as a rescue from a lfs.

The upper portion of the pectoral fins are deteriorating and the portion where the fins join at the base are also in bad shape.

Any advice for treatment would be helpful. This one is new to me. It's not a mechanical fighting injury.

ph: 6.8-7
Nitrites: 0
Nitrates: 5 ppm
temp: 83

Water changes: 30% daily. Running two Eheims in circuit w/UV sterilizer.

Picture attached. Sorry for the low quality.

Graphic1.JPG