Yeah I guess I should have mentioned that earlier but yesterday I took tweezers and handed each a single thawed out frozen mysis shrimp (the little kind not PE). But anyhow they both held on to and appeared to be eating the shrimp for about ten minutes. Then they dropped it. But how big could their stomachs be?

The best I have found pertaining to their diet was the fecal pellets of their partner cucumber, slug, or snail ( hence why I gave them a turbo snail to be with.

The feather star on the other hand still is unknown when it comes to it's diet yet I and a few others have been able to keep them longer than their normal survival time in the aquarium before starvation catches up with them.

The only thing I can think of is that they need more area to pick around at such as in the rest of the tank rather than just in their little cage with a little piece of rock and a little bit of sand. But it is still a bit of an unknown.