Many fishes colors will fade with bright light or light colored substrates ,and will appear much darker in color with dark substrates and subdued lighting. Sometimes their colors fade in an effort to blend in with the substrate, and some fish just don't feel comfortable with bright colored gravel or lights. You water parameters appear to be in order and so long as the fish are eating,I might just observe them as has been mentioned. They may just be adapting to new surroundings. I prolly wouldn't keep them in temp. much above 80 degrees.With 76 being ideal.
Last edited by 1077; 05-06-2009 at 01:08 PM..