Well, I seen this happen many times with my prized wild/silver angelfish. The three verticle stripes that cross its body, disapear and reapear 30sec~3min. I don't really know if this is some type of camouflage defense it has when scared or is it some type of bizarre angelfish? Lighting does not affect this effect at all of the stripes reapearing and disapearing. Anyone got any info about this? Will be grateful for any info.