whats the best things to feed angel?

[pibulljc]

I keep reading where angel like sponge,shrimp,brine,ect..I been feeding plankton,brine and sea veggies on a clip.My emperor angel picks certain things out of the plankton but where do i find food sponge and all the natural stuff he would be use to in the wild? any suggestions would help

 

[beecher]

I alternate between FormulaI and FormulaII and mix in some flakes and brine once in awhile. My Lemon Peel seems content and healthy with that.