| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 20 years, 10 months. |
| 1 | arapaimag (k: 3) since 1992-10-16 to 2013-09-15, that's 20 years, 10 months |
| 2 | chillired since 2007-11-27 to 2009-11-27, that's 2 years, 0 months |
| 3 | invaderwithkey (p: 15) since 2008-01-27 to 2010-01-27, that's 2 years, 0 months |
| 4 | mustang93svt since 2010-12-11 to 2012-12-11, that's 2 years, 0 months |
| 5 | Decker504 since 2011-12-07 to 2013-12-07, that's 2 years, 0 months |
| 6 | Peter Petersen since 2014-01-16 to 2016-01-16, that's 2 years, 0 months |
| 7 | Sean B since 2014-03-02 to 2016-03-02, that's 2 years, 0 months |
| 8 | Altifrons since 2017-03-16 to 2019-03-16, that's 2 years, 0 months |
| 9 | Wen since 2021-12-05 to 2023-12-05, that's 2 years, 0 months |
