help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

HEY TROPICAL FISH FORUMS. I HAVE BOUGHTEN A 2 GALLON BOWL WITH PEBBLES AND A PLANT THAT SEEMS TO BE DYING. BUT THE MAIN PROBLEM? MY DWARF GOURAMIS ARE FIGHTING AND BITING EACH OTHERS FIN. PLS TELL ME WHAT TO DO!!! AND FAST