Was talking to a guy who put 10 neons into a 100L long tank to start his cycling, and noticed that they all seperated and started making small territories for themselves similar to tiny lil cichlids,
have noticed in my tanks when there is about 40 - 60 they will form a really tight school, but when the school dropt to around 20 - 25 they spread out.
also noticed that to get a realy tight forming school, add an angel fish
hell of a lot of behavioural actions for a tiny lil fish