15) Betta If you are looking for additional flash and color, the betta fish is the one for you. The males have brilliantly bright long fins.
They are also known as Siamese Fighting Fish. They fight with other bettas, so you will only want one in your tank.
These fish are hardy and will eat flake food or pellets. Because of the male betta fish’s long fins, be sure not to pair them with others who might pick at the fins.