You cannot post any pics until you have at least 10 posts under your belt. This was done to help control spam and nasty links from some people. You might want to introduce yourself to help you to attain 10 posts.
In the meantime, could you describe your shrimp? Or, can you see your species in this link?
I think that the Amano looks the most like the three that I've got but do you think that the LFS would advertise these shrimp as River Shrimp?? If not don't worry they are quite reliable and I could ask of the water conditions and work from there!