It's a type of Pygmy rasbora, I'm pretty sure of it. BUT I could be wrong.
I saw some pics with some exactly like the one you have up there but I can't find them. Still looking.
Nope, can't find any pics. It's a lot like the Elegant Rasbora, but it has the red tail. They're VERY small. I wanted some but couldn't find a source.
Roan