| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 24 years, 5 months. |
| 1 | arapaimag (k: 10) since 1989-01-03 to 2013-06-23, that's 24 years, 5 months |
| 2 | Kenneth Wong since 2007-01-21 to 2014-05-08, that's 7 years, 3 months |
| 3 | Theo21 since 2007-02-22 to 2017-12-15, that's 10 years, 9 months |
| 4 | ani-mal-lvr since 2007-06-11 to 2009-06-11, that's 2 years, 0 months |
| 5 | Trident2004 since 2007-06-14 to 2009-06-14, that's 2 years, 0 months |
| 6 | soltarii007 since 2007-06-29 to 2011-11-16, that's 4 years, 4 months |
| 7 | amiidae since 2007-07-04 to 2009-07-04, that's 2 years, 0 months |
| 8 | too<many>tanks since 2008-01-27 to 2011-01-27, that's 3 years, 0 months |
| 9 | amazonfishman since 2008-02-28 to 2010-02-28, that's 2 years, 0 months |
| 10 | SuperLaz since 2008-04-18 to 2010-04-18, that's 2 years, 0 months |
| 11 | yellowcat since 2008-09-04 to 2010-10-05, that's 2 years, 1 months |
| 12 | Redtailrob (k: 2) since 2008-11-01 to 2023-03-11, that's 14 years, 4 months |
| 13 | Schmike since 2009-01-01 to 2011-01-01, that's 2 years, 0 months |
| 14 | bluescotty23 (p: 2) since 2009-03-01 to 2011-03-01, that's 2 years, 0 months |
| 15 | tezr since 2009-04-20 to 2011-04-20, that's 2 years, 0 months |
| 16 | Altifrons (p: 2) since 2009-06-02 to 2012-03-06, that's 2 years, 9 months |
| 17 | ndcp18 since 2009-09-15 to 2011-09-15, that's 2 years, 0 months |
| 18 | miles3 since 2010-05-10 to 2012-05-10, that's 2 years, 0 months |
| 19 | human001 since 2010-06-22 to 2012-06-22, that's 2 years, 0 months |
| 20 | MilkMan since 2010-11-18 to 2012-11-18, that's 2 years, 0 months |
| 21 | richb since 2011-03-20 to 2012-07-07, that's 1 years, 3 months; who writes, "I got this fish as a 3 or 4 inch juvenile. He settled in pretty quickly. He now eats silversides and is rather spectacular. However, so far he does not like tankmakes unless he can eat them. He is currently in a 5' long 100 by himself. He beat on the planiceps until I had to move him. Unfortunately, this beautiful fish jumped, knocked the cover off the aquarium and landed on the floor. He died." |
| 22 | snakelover since 2011-03-29 to 2013-03-29, that's 2 years, 0 months |
| 23 | AquaristJoel since 2011-04-15 to 2013-05-15, that's 2 years, 1 months |
| 24 | oldfish since 2011-05-11 to 2019-01-13, that's 7 years, 8 months; who writes, "Kept with 5 large Leopoldi stingrays without any squables. Active beginning at dusk and feeding mostly on sinking pellets" |
| 25 | Benjamin Goh since 2011-05-13 to 2013-05-13, that's 2 years, 0 months |
| 26 | Buddiechrist since 2011-06-06 to 2013-06-06, that's 2 years, 0 months |
| 27 | victionOne since 2011-09-23 to 2013-09-23, that's 2 years, 0 months |
| 28 | ElTofi since 2013-02-22 to 2013-04-15, that's 0 years, 1 months; who writes, "Dropped into the 720 liters to grow up a bit... it will end into the Stingrays tank, in the basement..." |
| 29 | Apostolis since 2013-10-30 to 2015-12-22, that's 2 years, 1 months |
| 30 | unstoppablejayd since 2013-11-20 to 2015-11-20, that's 2 years, 0 months |
| 31 | mcaquatic since 2015-01-10 to 2017-01-10, that's 2 years, 0 months |
| 32 | JonathanReid since 2015-03-16 to 2017-03-16, that's 2 years, 0 months |
| 33 | TheFishGuy since 2015-09-10 to 2016-11-26, that's 1 years, 2 months |
| 34 | Brachyplatystoma since 2015-11-09 to 2017-11-09, that's 2 years, 0 months |
| 35 | Hrothgar Sørensen (p: 2) since 2017-04-19 to 2019-06-22, that's 2 years, 2 months |
| 36 | CoryCatfish1212 since 2017-10-22 to 2019-10-22, that's 2 years, 0 months |
| 37 | redtigrinus (p: 3) since 2018-10-15 to 2020-10-15, that's 2 years, 0 months |
| 38 | Copp81 since 2020-01-15 to 2022-01-15, that's 2 years, 0 months |
| 39 | Captainandy since 2021-04-22 to 2023-04-22, that's 2 years, 0 months |
| 40 | Ichthyovenator since 2023-04-10 to 2025-04-24, that's 2 years, 0 months |
