In my ten gallong tank I had a beta, 4 neon's, and a rubberlip pleco. Last weekend I got 2 neon's to round out the school. Bought them from a good fish store and all.
When I was trying to net them out of the bag I spilled most of it into the tank, and just went ahead and dumped the rest of it into the tank with the fish.
As of today only the pleco and 1 neon are left
Take this as a lesson to never disregard advice offered by this forum :/