What other fish can you keep in the same tank as a Siamese fighting fish?

i would recommend fish that look different from your male betta. male bettas fight other male bettas, and if aggravated they will try to tear apart most fish with flowing fins. they dont even seem to care about size. i recommend catfish and mollies. stay away from fin nippers. and any fish with long fins, even long tailed guppies. you could keep your betta with angelfish too, but angelfish need a really big tank, like 30-40 gallons (for one or two angels).