well it looks like there is venom of some sort in the aptasia, cant add that to foodHmm, and I see it in a different light.
I don't see any harm in making a small batch to see how the fish respond.
I have no clue what the nutritional value is, if any.
If they don't eat it, no harm no foul.
If they do, you might spark an interest in eating the live ones.
With all that said, I wouldn't hold my breath hoping for the latter.