Can anyone exlain this?

shawe1

Jack Dempsey
MFK Member
Aug 28, 2013
336
7
33
Hertfordshire, England
One of my orangeheads underside has turned black. His pelvic fins, chest and front part of his anal fin have gone black and I am not sure how/why??

All the other fish are fine, the paramters are fine, temp stable. He is still eating and acting normal.

The only thing I can see is that the ends of his pelvic fins have been nipped a bit but nothing major.

Can anyone explain this?
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