Hey guys, I have a 20 gallon fish tank with 3 males and 3 female guppies. One of the male fish recently has become very aggresive and I was wondering what I can do to calm him down. Before 1 male was following a female all the time and now that male has started to attack the male following the female. And they both go into like a battle stance and keep swimming around each other. And occasionally the aggressive one will attack the females tail and then the other male steps in and go into a battle stance. This just started happening today, should I wait it out until tomorrow and see if he calms down or should I remove him from the tank asap for now?