| No. | All keepers listed by when they started keeping this species. The longest an individual has been kept is 8 years, 0 months. |
| 1 | dracoz since 2007-08-19 to 2009-08-19, that's 2 years, 0 months |
| 2 | Mrs.JP since 2007-10-25 to 2009-10-25, that's 2 years, 0 months |
| 3 | GreenSynoMan (k: 7) since 2007-11-17 to 2009-01-19, that's 1 years, 2 months |
| 4 | soobie123 since 2007-11-18 to 2009-11-22, that's 2 years, 0 months; who writes, "One of three fish I bought out of the Oto tank at Petsmart. Didn't even realize they weren't all the same species until I got home!" |
| 5 | reneb (k: 5) since 2007-12-03 to 2011-03-10, that's 3 years, 3 months |
| 6 | rmkarros (k: 3) since 2008-01-29 to 2010-01-29, that's 2 years, 0 months |
| 7 | alyosha since 2008-01-29 to 2010-01-29, that's 2 years, 0 months |
| 8 | thelivelylady since 2008-03-25 to 2010-03-25, that's 2 years, 0 months |
| 9 | Complexity since 2008-04-01 to 2010-10-17, that's 2 years, 6 months; who writes, "Purchased what I thought were 9 O. vittatus, but at least 1 has turned out to be O. mariae. It appears the store don't know the difference and are thinking they're both the same fish." |
| 10 | misscoolkitty since 2008-04-27 to 2010-04-27, that's 2 years, 0 months |
| 11 | AU Chief since 2008-06-07 to 2015-07-15, that's 7 years, 1 months |
| 12 | ASCauley since 2008-06-28 to 2010-07-04, that's 2 years, 0 months |
| 13 | Lique since 2008-06-29 to 2010-06-29, that's 2 years, 0 months |
| 14 | nikelodeon79 since 2008-10-08 to 2010-10-08, that's 2 years, 0 months |
| 15 | skaskankerbr since 2008-11-23 to 2009-11-20, that's 0 years, 11 months |
| 16 | Death Pony since 2009-02-05 to 2011-02-05, that's 2 years, 0 months |
| 17 | otoguppylover since 2009-02-10 to 2011-02-17, that's 2 years, 0 months |
| 18 | hotsauce48 (k: 2) since 2009-02-14 to 2011-03-21, that's 2 years, 1 months |
| 19 | blaqksotu16 (k: 5) since 2009-05-10 to 2011-05-10, that's 2 years, 0 months |
| 20 | L number Banana (k: 5) since 2009-06-18 to 2014-12-25, that's 5 years, 6 months; who writes, "All my otos seem to breed but I never see it, there just appears to be more once in a while. I move the smallest ones to other tanks and wait for the next batch. Only thing that seems relevant is that they only breed in this tank with harder water. Update: Pretty sure these guys are the most prolific breeders. Most of the ones I give away are these ones." |
| 21 | mdfa.ca since 2009-07-02 to 2011-07-02, that's 2 years, 0 months |
| 22 | ayrtoninst (k: 7) since 2009-11-07 to 2011-11-07, that's 2 years, 0 months |
| 23 | Patzee (k: 3) since 2009-11-18 to 2011-11-22, that's 2 years, 0 months |
| 24 | Greywitch since 2012-03-11 to 2014-04-13, that's 2 years, 1 months |
| 25 | flipperfeet (k: 6) since 2012-03-26 to 2020-03-28, that's 8 years, 0 months |
| 26 | naturalart since 2012-07-25 to 2012-09-17, that's 0 years, 1 months |
| 27 | Gsneufeld (k: 4) since 2012-08-15 to 2014-08-15, that's 2 years, 0 months |
| 28 | Gallett291 since 2013-02-03 to 2015-02-03, that's 2 years, 0 months |
| 29 | Valb68 (k: 4) since 2013-07-16 to 2015-12-04, that's 2 years, 4 months; who writes, "Incredibly hollow, hungry, and frantic, instantly went to eating algae. One tried schooling with the zebra danios. As of 7/21/13 all are fat and calm. Looks like 2 females and 2 males." |
| 30 | lhafvens since 2013-08-25 to 2015-08-25, that's 2 years, 0 months |
| 31 | BlackCanopus since 2013-09-01 to 2015-09-03, that's 2 years, 0 months |
| 32 | Restazonia since 2014-10-21 to 2016-10-21, that's 2 years, 0 months |
| 33 | Johnny579 since 2014-11-12 to 2016-11-12, that's 2 years, 0 months |
| 34 | Gerald CapeTown since 2015-07-18 to 2017-07-18, that's 2 years, 0 months |
| 35 | lindfieldroy since 2016-05-23 to 2018-05-23, that's 2 years, 0 months |
| 36 | antonyb93 since 2016-09-25 to 2018-09-25, that's 2 years, 0 months |
| 37 | Pongsansoy (k: 3) since 2018-05-18 to 2019-01-01, that's 0 years, 7 months |
| 38 | MADRacing (k: 4) since 2019-01-03 to 2021-01-03, that's 2 years, 0 months |
| 39 | craigc since 2020-04-21 to 2022-04-21, that's 2 years, 0 months |
| 40 | N_F_S since 2024-04-04 to 2024-04-23, that's 0 years, 0 months |
