Tetras????

If you get neons, do a search for Cardinals. They are much harder to come by, but they look almost identical other than the red extends the entire body, and they dont have the disease all neons have. They also cost more, but I would highly suggest going with them. Another option is my favorite fish (in front of Cardinals) the harlequin Rasbora. There beautiful when they show all thier colors in a good clean tank. Hope this helped.