How big should a bowl be for 1 hi fin tetra?

Betta fish bowls do not necessarily need to be very large due to their harsh living conditions in the wild; however, the bigger the tank is, the longer he will live and you don't have to clean the tank as nearly as often. Adding a live aquatic plant adds beauty and even more oxygen to the water, giving maximum health to your Betta.

They don't have to have very big bowls because they can live in very small spaces however, they are very energetic and love to swim around so if you want to keep two or three you might contemplate a big tank with lots of hiding places. It isn't a good idea to keep a male and a female together, unless they are breeding but, you can keep two females together peacefully. Two males is DEFINITELY NOT a good idea.