They don't have to have chocolate chip, any star will do, when I caught the female in the photo she was running across the sand toward a ledge (where the male was hiding) dragging a brittle star that was 3 times her size. In my tanks they will leave any star no matter how much they have eaten if I put a linkia star in. If I put 2 in together, a linkia and any other they go for the linkia first in all cases. I can only tell you about the ones I have, but several sources on natural history of the animal state they eat all stars found in habitat, and the ones I have come from Hawaii where there are no chocolate chip stars.