Common names are bad enough but I foung especially with African Cichlids, the latin names were being changed as often as the experts were changing their underwear.... I have cleaner (skunks) and peppermint shrimp, they all breed often, but the peppermints seem to have less trouble growing, I've not yet raised any to adult hood but I am going to try.

Samw is correct any two are a pair. makes being a matchmaker easy huh?

What's the difference?
Distribution.
Lysmata grabhami - with solid lines on the tail is the Atlantic species

Lysmata amboinensis- has white patches on the tail and is Indo Pacific to Red sea.
Chances are more of you have L.amboinensis as a larger portion of shipments are Indo Pacific than Caribean.

As far as the Peppermint shrimp goes I found 6 very similiar species that all could be labeled as Peppermint shrimps.

Wow...6 species that can be ID'd as peppermint? Holy cow.

Thanks so much for your help.

They are not all called Peppermint but are very similiar in appearance and could easily be mis identified.