I got these at my lfs. they were selling them as "algae shrimp" for £1.95 so i grabbed 6. Their certainly not the normal "algae shrimp" they sell - they are a gorgeous dark blue/navy with a bright white stripe.
Thier very pretty shrimp. I'd say their about as big as a sakura cherry shrimp. They are a really intense dark blue (the pic dont really do it justice), the guy at the lfs was curious too as it was quite obvious they werent amanos. I didnt say anything incase he investigated and bumped up the price! Only risk is of them breeding with my cherries - i don't breed for profit so i'm not too fussed we'll just have to wait and see!
If its a Malayan shrimp then no fear of it cross breeding with your cherrys. Cherry shrimp are neocaridina and the Malayan shrimp is Caridina. The Malayan shrimp can come in a range of colours as well .
Australian and many of our Northern neighbors share certain inverts (or at least common ancesters) which would be why it looks so much like the Australian Caridina typus.
If you have a pair of Malayan shrimp you can breed them in your tank, they have larval young (rather than shrimplets) but the young dont require brackish water like most larval species of shrimp.
Oh cool! yes i'm pretty sure thats what they are - their white pattern matches the pictures perfectly. Their now coming out from hiding which is nice! (even though their hard to see on my black gravel!!) My cherries breed like crazy so i'm hoping for babies from these!