Leslie answered this question before but I finally found a pic that shows a couple of these pistol shrimps that look identical to mine. Am I correct in thinking this is a potentially "bad" pistol shrimp or at least cannot be paired with a goby. I found it on WWM at this address under James Fatherree's article on shrimp. Thanks in advance.
http://www.wetwebmedia.com/ca/cav1i2/fatheree%20shrimps/james_w.htm
http://www.wetwebmedia.com/ca/cav1i2/fatheree%20shrimps/james_w.htm