| Reference no. | Description | Year | Name Used | Page |
|---|---|---|---|---|
| 128475 | Campos-da-Paz, R, 2018. A new species of Hypopygus Hoedeman (Gymnotiformes: Rhamphichthyidae) from the rio Trombetas system, Amazon basin, Brazil . Zootaxa 4410(1):190-200. | 2018 | Hypopygus varii | 190-200 |
| 128868 | Beolens, B., M. Grayson and M. Watkins, 2023. Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. | 2023 | Hypopygus varii | 1359 |