Yes ova is a phenomenal coral food and is a good food for "attempting" to get mandarins to eat frozen food. We use to use it by itself near mandarins, once they started eating that we would add cyclops, then mini mysis. I couldn't give a percentage on how many eat it but my personal pair lived for that stuff for almost 3.5 years. Many of the ones we brought into the shop hopped on it quickly too. Other than mandarins we saw many copperbands pick at it and was also a great coral food for growth/color. Thx for shout out [MENTION=6028]Fly5150[/MENTION]