I was just at Petco and bought what (according to the label) were pearl danios. I had been surprised at the time at how beautiful these danios were. The more I think about it though, the more I am convinced they are actually tetras. They are the "tall" tetra shape (like serpaes, as opposed to skinny, like neons), one inch long, and are clearish color with light orange translucent fins. The dorsal fin has a black stripe at the back edge of it. They school near the bottom of the tank underneath plants.

So... what could they be?

In other news, my nitrates are too high...