Black splotches on my blood parrot?

[Carefree_Dude]

My blood parrot recently got these black splotches on him. he still eats normally and acts normal. Any idea what these are? Should I quarantine this fish? my other blood parrots are unaffected by this. Oh, ammonia and nitrate 0, PH is 8.2, Nitrate is <10ppm.

I have never seen this fish be picked on or anything. Actually I'm rather amazed by the lack of aggression in my tank.

 

[mother monster]

blood parrots are the only type of fish apparently that can get 'black spot disease'. it's an indication of poor water quality, and sometimes rarely a sign they're in spawning behavior; should clear up once the water condition improves. give it some time, perhaps he's in a spawning mood and it will be gone soon; but i would perform more frequent, smaller water-changes anyway until you see it clear up~ he should be fine, hope so! :>