I have read in a number of places and in a magazine that it is safe to put a single male Betta in a community fresh water tank...mine is 10 gallon. I have two Zebra Dions, one neon tetra, one diamond tetra and one bright red tetra (can't remember name). The Betta has been living very peacefully with all the fish except the bright red Tetra...he flares up and chases the red tetra around every so often (couple times a day). Any thoughts?