hey guys so i have notice one of my star fish having strange behavior lately. he has been hanging on the glass awkward. yesterday i found him upside down with all legs curled back. he seems to be going down hill fast. i set him on a rock to see if he was alive and eventually he started moving but the ended up on a rock upside down again. usually when one of the two chocolate chip star fish get upside down the turn them selves over but this one has not seemed to. Lately he has been next to the glass in a really awkward position. Is he dying? i went to the LFS and had my water tested just in case maybe my tests weren't accurate and he said my water was great. i don't know what to do. he is barely moving now and seems to be getting worse and worse. is this usual behavior?