I don't think that harlequine shrimp have a substitution for starfish feet. You may want to start buying reef-save sea stars! I'm not too sure if that crab looks all that safe, especially for a reef tank. I saw one at my LFS, it looked and moved like a true demon :twisted: . HTH
I don't know about the crab. Harlequin shrimp will not eat anything other than seastars. They will not eat even brittle stars. The best way to keep them fed is to have a few starfish and use them on a rotation. Keep all of them in the sump except for one. Use that one as food for a little bit, then take it out and put it in the sump to let it regenerate. Put one of the other starfish in the main tank as food at this time. Just keep this up and you will rarely have to buy more starfish. An even better way to do this is instead of putting the entire starfish into the tank, cut off one of its arms and only put the arm in the tank. This way there is no way for the shrimp to kill the starfish. Not everyone has the stomach to cut an arm off a starfish though . HTH
we have soldier crabs on the coasts of fraser island, they live in large groups and when anything around them approaches they run and bury themselves quickly in the sand.
they are naturally a very shy species.
feeding the soldier crab- Soldier crabs eat the thin coating of detritus on sand grains. They scrape up sand grains with their downward pointing pincers and bring these to their mouthparts that then sift out any tiny food particles. The shifted sand is then discarded in a little ball. They leave larger sand balls in untidy heaps
if it is actually a soldier crab, you got yourself a sand cleaner
Yes the crab is soldier
I think my sand allways clean and clear.
Yesterday i buy seastar fish shrimp eats all seastar is it possible only one day eat all seastar or may be its very hungry.