Yeah, my pics don't really do them justice, they're stunning little fish. I also got 12 ember tetras which I'm thinking of adding to my shrimp tank... they were kept in a bare CRS breeding tank and left the shrimplets alone. Not sure what they'll be like after a couple of weeks settled in though.
Let us know how you get on with them. I've never heard of them before, but agree that they do look good. I was thinking of upside down cat as well when I saw them, but the fins seemed too big.
I had a look on fishbase and it gives the name as Erethistes jerdoni as the current valid name, although it will probably change again! Grows to 3.8cm, comes from India and Bangladesh and "Occurs in slow-moving hill streams with sandy bottom, rivers and beels (?). A very sluggish fish"!