The Betta fish, or fighting fish (Betta Splendens), is deservedly considered one of the most popular inhabitants of freshwater aquariums. Its bright, luxurious fins and expressive character attract both experienced and novice aquarists. However, despite the common misconception about the unpretentiousness of bettas, keeping them in a limited volume requires special attention and strict adherence to rules. Experts from the taba.su portal have prepared a comprehensive guide that will help ensure Betta Splendens live long and healthy lives even in a mini-aquarium environment.