On of the angelfish that I have is silver with a few black stripes. Sometimes he looks like he is just plain silver. Other times his stripes are very dark and the top of his nose/face gets colored dark as well. I've seen this change happen in a really short time (1 minute!) He will go from silver to obviously striped.
Does anyone know why this would happen? Is is a sign of distress or something like that?
I tried to attach/copy a picture for reference. (you can hardly see the stripes in this picture)


Does anyone know why this would happen? Is is a sign of distress or something like that?
I tried to attach/copy a picture for reference. (you can hardly see the stripes in this picture)
