All Fishes ⇒ My Fish Registered Keepers ⇒ Betta unimaculata

No. All keepers listed by when they started keeping this species. The longest an individual has been kept is 2013 years, 1 months.
1 MarZissimo since 2015-01-07 to 0001-11-30, that's 2013 years, 1 months
2 Bettaja (k: 6) since 2017-05-21 to 2019-11-22, that's 2 years, 6 months; who writes, "Minimal aggression for a larger Betta species, still growing as well."