Due to their labyrinth organ, bettas can endure low oxygen levels, but cannot live on for long in unmaintained aquaria, as poor water exceptional makes all tropical fish more susceptible to illnesses like fin rot. Thus, however the betta’s popular tolerance of still water, a mechanical filter is needful for his or her long term health and durability. Similarly, live aquatic plants supply a supplemental source of filtration, as well as crucial enrichment to the betta. Despite frequently being displayed and sold in small containers in the pet trade, bettas do best in larger environments; while they are able to live to tell the tale in cups, bowls, and other constrained spaces, they can be much happier, healthier, and longer lived in a larger aquarium. Although some betta fanatics claim there is a minimum tank size, deciding upon a strict baseline is a little arbitrary and area to discuss. Although males bettas are solitary and aggressive towards one another, they are able to commonly cohabit with many types of fish and invertebrates if there’s enough space and hiding places.