These buggers do get overshadowed by their more colorful counterparts (Cardinal and Neon Tetras). I've seem them at the local Petsmart and Petco stores and always though about using them, but when placed side by side a Cardinal tetra holding tank, the Cardinal wins every time.
Great looking photo George, maybe I'll give these guys a chance. They seem to have a subtle appearance, and look pretty good in their schooling formation.
-John N.