| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 12 years, 5 months. |
| 1 | arapaimag (k: 2) since 2001-01-04 to 2013-06-19, that's 12 years, 5 months |
| 2 | kvnbyl (k: 3) since 2007-09-25 to 2013-12-02, that's 6 years, 2 months; who writes, "seen very infrequently, but are getting bigger so i guess it's working for them" |
| 3 | The.Dark.One since 2009-03-19 to 2011-03-19, that's 2 years, 0 months |
| 4 | phenix since 2009-05-30 to 2011-05-30, that's 2 years, 0 months |
| 5 | danlinn since 2011-01-08 to 2013-01-08, that's 2 years, 0 months |
| 6 | Iiriva since 2012-11-05 to 2013-08-18, that's 0 years, 9 months |
| 7 | Redcatman since 2014-04-13 to 2018-04-13, that's 4 years, 0 months; who writes, "I live in a soft water area. The only water quality parameter measured regularly is pH which is kept between 6.5 and 7.0. Ammonia and nitrite are usually zero when I do occasionally measure them. Nitrate is controlled by partial water changes every 2-3 weeks. The tank is filtered using an old (40 years!) Eheim external filter which has been in continuous use since it was purchased. Contains various Eheim filter materials also bought 40 years ago. Only material replaced is a layer of filter wool. Filter is cleaned out when water flow drops which is usually every 2-3 months." |
| 8 | ianmarg since 2019-08-24 to 2023-08-15, that's 3 years, 11 months |
| 9 | Noel since 2020-06-12 to 2022-06-12, that's 2 years, 0 months |
| 10 | Doradid (k: 3) since 2021-05-05 to 2025-05-01, that's 3 years, 11 months |
