Cat-eLogRightMy Cats Registered Keepers RightHeterobranchus longifilis

No. All keepers listed by when they started keeping this species. The longest an individual has been kept is 7 years, 3 months.
1 arapaima since 2007-03-01 to 2009-03-01, that's 2 years, 0 months
2 Dazza3 since 2013-01-21 to 2020-05-13, that's 7 years, 3 months; who writes, "Fast growing. can be aggressive.very active.wet pet"