[fantails]

I was curious in this video, is this normal behavior for White Clouds? They always seem to be harassing each other. They even miss meals because of their picking and chasing.
I have 12 in a 15g by them selves. The temp is 75 without heat. I do keep a heater but it is un plugged. The filtration is aqua clear 30 and the tank is cycled

WCMM - YouTube

 

[RackinRocky]

I won't be of much help, since I've only had WCMMs for about 5 days. I only have 3, but they don't act anything like yours. Another thing, mine are in a community 55 gallon tank. Yours do seem awfully aggressive, but maybe that's normal for WCMMs? Although I've never read about them acting this way when I researched them. Are there any nipped fins or other injuries? I suppose they could just be "playing," but it would worry me if mine acted like that. Someone with more experience please chime in!