| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 20 years, 2 months. |
| 1 | Walter since 1988-10-01 to 2006-06-01, that's 17 years, 8 months |
| 2 | arapaimag since 1993-06-02 to 2013-08-30, that's 20 years, 2 months |
| 3 | MADRacing since 2006-10-02 to 2019-01-03, that's 12 years, 3 months |
| 4 | Kostas since 2008-04-03 to 2015-01-07, that's 6 years, 9 months |
| 5 | wesman (p: 2) since 2008-04-15 to 2010-04-15, that's 2 years, 0 months |
| 6 | briggadane since 2008-05-19 to 2010-05-19, that's 2 years, 0 months |
| 7 | Julie since 2008-06-08 to 2012-06-11, that's 4 years, 0 months |
| 8 | PhiltheNelson since 2008-08-13 to 2010-08-13, that's 2 years, 0 months |
| 9 | mrwickedweasel since 2010-01-01 to 2012-03-04, that's 2 years, 2 months |
| 10 | oscar300 (p: 2) since 2010-02-13 to 2012-02-13, that's 2 years, 0 months |
| 11 | coelacanth since 2010-02-25 to 2015-03-23, that's 5 years, 0 months |
| 12 | EHEIM~ADDICT since 2010-03-19 to 2012-03-19, that's 2 years, 0 months |
| 13 | Nat (p: 5) since 2010-06-28 to 2012-06-28, that's 2 years, 0 months |
| 14 | maud.it since 2010-10-05 to 2012-10-05, that's 2 years, 0 months |
| 15 | sfchoong since 2011-01-05 to 2013-01-05, that's 2 years, 0 months |
| 16 | 2wheelsx2 since 2011-04-05 to 2012-04-23, that's 1 years, 0 months |
| 17 | victionOne since 2011-09-23 to 2013-09-23, that's 2 years, 0 months |
| 18 | Copp81 (p: 2) since 2012-01-27 to 2014-03-01, that's 2 years, 1 months |
| 19 | BernieEcht since 2012-05-29 to 2014-05-29, that's 2 years, 0 months |
| 20 | HenkeP since 2012-10-04 to 2016-10-15, that's 4 years, 0 months |
| 21 | Apostolis since 2013-01-14 to 2016-05-01, that's 3 years, 3 months |
| 22 | cjerrom since 2013-04-09 to 2018-08-21, that's 5 years, 4 months |
| 23 | DHarris since 2018-03-04 to 2020-03-04, that's 2 years, 0 months |
| 24 | rizla75 since 2018-12-21 to 2023-03-08, that's 4 years, 2 months |
| 25 | Nejat22 since 2019-05-02 to 2021-06-04, that's 2 years, 1 months |
| 26 | calvus since 2019-05-27 to 2021-05-27, that's 2 years, 0 months |
| 27 | dmfd0331 since 2019-08-22 to 2021-08-22, that's 2 years, 0 months |
| 28 | heroin_nee since 2019-12-14 to 2021-12-14, that's 2 years, 0 months |
| 29 | TomSerious since 2020-01-13 to 2021-03-28, that's 1 years, 2 months |
| 30 | Rob909 since 2020-03-31 to 2022-03-31, that's 2 years, 0 months |
| 31 | Lapon since 2020-12-06 to 2022-12-06, that's 2 years, 0 months |
| 32 | jgr1994 since 2021-02-14 to 2023-02-14, that's 2 years, 0 months |
| 33 | mallemalle (k: 2) since 2021-03-04 to 2024-11-21, that's 3 years, 8 months |
| 34 | Todd Welch since 2021-07-25 to 2023-07-25, that's 2 years, 0 months |
| 35 | Brandonhaley9812 since 2021-09-20 to 2023-09-20, that's 2 years, 0 months |
| 36 | N_F_S since 2024-04-04 to 2024-11-21, that's 0 years, 7 months |
