Picked up a gang of little chromis tonight as well as a female for my squarespot. He reacted to her immediately and the band on his head which is normally faintly visible was very contrasty as were the horizontal stripes on his body.
http://www.youtube.com/watch?v=igTDuPKIeqQ
The chromis... sure wish they stayed small, all alive, and schooling. To dream! They already have drawn my firefish and gramma out into the open more.