| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 18 years, 2 months. |
| 1 | arapaimag since 1995-07-05 to 2013-09-14, that's 18 years, 2 months |
| 2 | RayGnz (k: 2) since 2008-03-19 to 2010-03-19, that's 2 years, 0 months |
| 3 | pikeman since 2010-11-03 to 2012-11-03, that's 2 years, 0 months |
| 4 | kitty2234 since 2012-03-21 to 2014-04-23, that's 2 years, 1 months |
| 5 | mifune since 2012-08-09 to 2017-01-31, that's 4 years, 5 months |
| 6 | BlackSouL since 2013-09-25 to 2015-09-25, that's 2 years, 0 months |
| 7 | bazzho since 2015-02-22 to 2017-02-22, that's 2 years, 0 months |
| 8 | Fishmandavew (k: 4) since 2018-03-19 to 2020-03-19, that's 2 years, 0 months |
