Have you ever owned a Betta Fish?
King betta
The King betta is a popular aquarium fish of unknown provenance.
Description.
The King betta generally grows to about 5–6 cm (2–2 1/2 in). Its pigments are generally vibrant beige to a white. As with most bettas, King betta females are smaller and less colorful than the males. The life span of the King betta is short, generally 2–3 years, rarely reaching four. The King betta is (as are all other bettas) members of the gourami family (Osphronemidae)
not dependent on high oxygen levels in the water, so a large surface area for gas exchange is not required.
Some Betta enthusiasts will claim that there is a minimum tank size for a Betta, but to try to set a strict baseline minimum is arbitrary and akin to the mythology of one inch of fish per US gallon rule.
Many consider 2.5 - 5 US gallons(9-19 liters) to be an ideal tank size for a Betta, "but you can successfully keep a Betta in a 1 gallon tank