Hi guys, just have a few questions with this Species, I have 20 of them on my 60 gallon community tank. Together with other fishes. just wondering for those people who keep them how does yours behave? I feel some of mine are rowdy than the other, and those who are could be males (more orange-ish in color) they keep chasing one another all over the tank, specially when it's after feeding time. Is this normal behavior? or did I get too many males? Didn't ask my LFS to sex them when I got the group so I don't know the M:F ratio ATM. Also is it just a myth about them following your fingers when you put it on the glass of the tank as per Aquarium Coops vids? They seem to do it but only before feeding, which I assume all other fish do. Thanks!!