This morning I was watching my neon tetras and they were showing some odd behavior... Well, I looked up some videos and sure enough, they were mating!
I recently added 5 new neons to the school, so I've been watching carefully to make sure they're getting along with the old ones. Guess it's a good sign
And now I know why my females were so fat lately... I saw them dropping their eggs around the tank. The neons ate most of the eggs immediately after they came out. Also, my cory cats were going crazy on the sand -- looks like they smelled the eggs or something and were devouring them too. So I won't be getting any babies (this isn't a breeding tank anyway of course, and I have nowhere to separate them to), but I thought it was a neat thing to share. I've heard neon tetras can be difficult to spawn (although I know many of you know how to do it). 
I recently added 5 new neons to the school, so I've been watching carefully to make sure they're getting along with the old ones. Guess it's a good sign