Angelfish fin problems

[roomhealth]

My Angelfish is having some issues.For about 2 weeks, it's fin has been crimped and bent as seen in photo.



The tank is a 29 gallon planted community tank. The Angel was added 1 month ago.
Water parameters are as follows, ammonia 0ppm, nitrites 0ppm, nitrates 10ppm. Easter changes are typically done once a week at 25% but I have increased that to twice a week.
I removed a somewhat aggressive honey gourami that bullied at meal times but was never observed nipping.
The tank has been treated with copper safe for a recent ick breakout from a dirty new BN pleco; 1 week of treatment and seems to be clearing nicely.
Question its, what is it and what is the next step? I have read of some people clipping bent ventral fins (seems like a bad idea). How stop you identify infected wounds on fish?

 

[roomhealth]

I should add that it is behaving normally, it is eating and swimming all around the tank. As for a description since the picture its kind of blurry: the top cm or so of the dorsal fin is apparently bent over and crimped. Not shredded or discolored.
Thanks

 

[bob mccoy]

the bent fin is normal . its a defect from to much inbreeding i have several now and they are starting to become popular wich i believe is not rite. never herd of cliping fish fins before. leave him be , check ph in water. keep treating for ich , and clean water is a must