HUKIT said:This species is dimorphic meaning the male and females have different colors. As juveniles they will have blue/black vertical stripes and have a light blue color with brighter blue in the fins. Females will stay this blue color throughout life. The male will start to turn yellow, which is completely normal.
Wy Renegade said:It is also possible, given that you've had them for a month, that you have two females and the dominate (usually larger) female is taking on some male coloration to display her dominance. This is also perfectly normal in Kenyi, especially if there is no male in the tank. While I agree that the most likely explaination is male showing dominant colors, the faint blue tint retained by the fish, might also indicate a female taking on dominant coloration.
bcurlacher54 said:its a male, thats why it changed colors.