I looked at this post earlier in the week and decided to give roe a shot.
Went to Mitsuwa, japanese market near me, and picked up tobikko. Its the tiny orange stuff in sushi. (flying fish roe)
My fish went nuts for it and all of my corals opened up and gobbled it down quick.
Feeding it is really easy with a turkey baster as the stuff sinks nice and slow.
Since it is small it is great for chalices and other things that have small mouths... like baby dendrophyllia heads.