Yesterday I put a new male betta in 10 gallon a tank with 6 pygmy corydoras. He has been following them around and consistently harassing them ever since. It appears that I am going to having to take the betta out and put him in another tank. Since it's only been a couple of days how long should I wait to see if he will leave them alone? This was my first attempt at a community tank so I would appreciate any insight at this point!