I have two tanks. One is my live bearer peaceful tank. The other is my barb/ tetra tank. When I bought my tiger barbs the lady gave me a female swordtail as "service" which is Korean for "on the house". This is also how I got stuck with my Chinese algae eater. She kept swordtails with the barbs and tetras, but swordtails are closer related to guppies. It seems to be doing all right in the current barb / tetra tank, and is actually a bully to the tiger barbs believe it or not. The barbs usually only chase around each other. Should I move my bully swordtail to the peaceful tank?