Glolights and Von Rio Tetras

[garfieldnfish]

I have 4 glolight tetras and 1 Von Rio tetra in a 20 gal tank. The Von Rio was a rescue case and I did not want to build up the school of glolights again. I thought they might match and complement each other. This seemed to be the case for the first few weeks. Now the Von Rio has grown up some and it looks like a pasture. The glolights are the sheep and the Von Rio is the shepperd dog herding them up whenever or where ever he wants them to go. No one got hurt so far but I am afraid it is stressing out my glolights. Any suggestions?

[neon7]

pick one, remove the other,schooling fish have totally different personalities when they are not in a scool of there own kind.if not the gowlights will suffer slow stressfull deaths.