Sponges for Angel fish?

[mac_aquarius]

Any idea what sponges that Queen angel like most? Because I try a gray & blue color sponges harvest from my friend's SPS tank, my angel doesn't see that as a food.

 

[DustyReefer]

Hikari makes an angelfish blend food that contains sponges. Iv'e tried it, and the fish liked it.

 

[pktech]

Is the fish not eating? What does it eat now?