| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 36 years, 3 months. |
| 1 | Iwona (p: 2, k: 10) since 1979-10-01 to 2016-01-16, that's 36 years, 3 months |
| 2 | Back since 1997-01-01 to 2005-01-01, that's 8 years, 0 months |
| 3 | arapaimag (k: 5) since 1997-01-05 to 2013-07-02, that's 16 years, 5 months |
| 4 | yellowcat since 1999-07-24 to 2010-02-10, that's 10 years, 6 months |
| 5 | brettwms75 since 2006-07-20 to 2010-09-21, that's 4 years, 2 months; who writes, "I really like to watch this fish swim and eat. I'd like to test-out the sting of this fish. I've felt an Electric catfishes jolt when I held one but the Fossil's sting scares me a bit. I'd buy more if I could find them!" |
| 6 | Dave Rinaldo since 2007-01-21 to 2012-01-04, that's 4 years, 11 months |
| 7 | CFC since 2007-01-27 to 2009-01-27, that's 2 years, 0 months |
| 8 | lordotterby since 2007-03-12 to 2009-03-12, that's 2 years, 0 months |
| 9 | amiidae since 2007-07-05 to 2009-07-05, that's 2 years, 0 months |
| 10 | Chi-Chi since 2007-08-31 to 2009-08-31, that's 2 years, 0 months |
| 11 | vernonlarge (k: 2) since 2007-09-13 to 2009-09-13, that's 2 years, 0 months |
| 12 | myrheksa (k: 3) since 2008-01-20 to 2010-03-22, that's 2 years, 2 months |
| 13 | miravns since 2008-05-25 to 2010-05-25, that's 2 years, 0 months |
| 14 | Shovelnose (k: 2) since 2009-05-02 to 2011-05-02, that's 2 years, 0 months |
| 15 | TRD (k: 2) since 2009-08-01 to 2012-10-03, that's 3 years, 2 months; who writes, "I think it is a male and a female. They tend to keep hidden during the day mostly." |
| 16 | Oliver D. since 2009-10-30 to 2011-10-30, that's 2 years, 0 months |
| 17 | in_the_seance since 2012-01-01 to 2017-09-29, that's 5 years, 8 months |
| 18 | Mcjlance since 2012-03-21 to 2014-03-21, that's 2 years, 0 months |
| 19 | Pestey since 2013-02-24 to 2015-02-24, that's 2 years, 0 months |
| 20 | CatfishPownage63 since 2014-11-03 to 2016-11-03, that's 2 years, 0 months |
| 21 | Arron_N since 2015-03-10 to 2017-03-12, that's 2 years, 0 months |
| 22 | apo1980 since 2016-05-26 to 2018-09-18, that's 2 years, 3 months |
| 23 | protopterus since 2017-03-24 to 2019-03-24, that's 2 years, 0 months |
| 24 | angerygrover since 2018-04-16 to 2020-04-16, that's 2 years, 0 months |
| 25 | Raehawksworth (p: 3) since 2019-04-02 to 2021-04-02, that's 2 years, 0 months |
| 26 | Redtailrob (k: 4) since 2019-06-13 to 2024-11-23, that's 5 years, 5 months; who writes, "Excellent feeders on bloodworm, chopped prawn,small pellets. Nocturnal. Although they do venture out at feeding time." |
| 27 | Juntti since 2020-07-02 to 2022-07-02, that's 2 years, 0 months |
| 28 | naturenerve since 2021-05-10 to 2023-05-10, that's 2 years, 0 months |
| 29 | N_F_S since 2024-04-08 to 2024-11-23, that's 0 years, 7 months |
