Partner Snapping Shrimps belong to the Phylum Crustacea, Order Decapoda (meaning 10 legs) which includes the Shrimps, Crabs and Lobsters, of which there are about 10,000 named species in many families. Partner Snapping Shrimps (also known as Pistol Shrimps and Goby Shrimps) are a type of Snapping Shrimp from the Family Alphaeidae. All are members of the genus Alpheus. The taxonomy of this group is in chaos and most of the scientific names used here are probably invalid but we have used them here to try to tie our species back to other records we have found in the literature. These names are only approximate. If anyone has a good understanding of the taxonomy of snapping shrimps could you please contact us. We would love your help.