I currently own 3 lemon tetras. One was alone for quite awhile before I bought the other 2. The 2 seem to school, if that can apply to 2 fish lol. The other seems like a loner, and sometimes gets chased by one of the others. Could this be becuase the way they were introduced or just becuase there isn't enough to have a so called social class thing going on? I plan on getting at least 8 more if my lfs stocks more, maybe that will ease the tensions.