Ok so I've done some searching and found that people have had problems with clowns loosing they're black with certain nems. Is this just him getting color? the big one ive had in the tank about a year and never really had any color changes with him other than just him growing and filling in. the little one I just got about 8 days ago. The black spots showed up 2 days ago out of nowhere and are darker today. yesterday the top half of him seemed like it was a darker shade that it was before. but not so much today. Could this just be him getting black on him with environment change or something that I need to be concerned about? He appears to be healthy and nothing wrong but only having him a week I don't know his full personality yet. spots are a little darker than the pictures show. and he has more on the left side that I couldn't get a pic of.