| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 25 years, 8 months. |
| 1 | arapaimag since 1988-01-08 to 2013-09-12, that's 25 years, 8 months |
| 2 | synodont_fan since 2007-04-20 to 2009-04-20, that's 2 years, 0 months |
| 3 | mrfishydude since 2010-09-27 to 2012-01-05, that's 1 years, 3 months |
| 4 | Mcjlance since 2012-03-21 to 2014-03-21, that's 2 years, 0 months |
| 5 | N0body Of The Goat since 2013-10-01 to 2020-08-11, that's 6 years, 10 months; who writes, "Very stocky ~18cm SL catfish, very outgoing and diurnal for a syno, "Troy" is often one of the first to greet me when looking into the 6-foot African tank." |
