Mutant discus

[thaiho]

 

[JayC74]

Nice. Wouldn't mind adding a couple of those blue ones to my collection. Those are actually pretty sweet looking

 

[pescado209]

now that's a purty fish

 

[J. H.]

That may be a cool color morph, like on half black angel, but it may be nerve damage.It probably could even be done on purpose. Here is a thread I stumbled on a while ago about it.
https://www.monsterfishkeepers.com/forums/posts/6110171