I may be corrected here..but, I wouldn't bother trying to search high and low for cleaner shrimp food. They will find alot of stuff to eat. Just about anything for food that goes into the tank has a bit of waste that finds its way to mine. I kinda crush up my Flake food for the clowns to eat, but always leave a few big flakes and the cleaners grab a piece and roll it into balls and play with it, eventually eating it. I toss in Mysis and Brine shrimp cubes every few days for a change of pace and the next day it's all gone, compliments of the cleaners (and others).. They seem to eat the extra, so I guess thats good enough.. for mine anyway...