Go long rather then tall . Floating plants and distractions are a must . People recommend an eleven number of bettas , in my experience that doesn ' t matter . I just moved my sorority from a 30 gallon square tank to a 20 long and they came alive . Over ten girls in mine with harlequin rasboras and shrimp . They ' re all peaceful and extremely happy ! I would highly recommend water lettuce for floating plant distractions or wisteria . Either way they sleep in floating usually do whatever you use they will thank you for it . I ' m at work so this is quick but I have a lot of sorority experience if you have any questions . I already made he beginner mistakes a while ago lol do tips help ! <| sep |> BRUH IS THE SHIRT FREE FR