physical defects

Just picked up a beautiful pearl gourami for my centerpiece a few days ago, but unfortunately just noticed her tailfin is quite different looking than images I found in my research. I'd like to know if this is indeed a deformation, and if so whether this might be a long-term health issue for her.

Since retiring and returning to fish keeping/breeding I have noticed trends that suggest bad practice by some commercial breeders/suppliers, possibly with the acquiescence of some retailers. We know the appalling practice of artificial colouring but points raised here make no direct accusations...