siponinmorok, Potamotrygon Hemraj-Naraine [D.], Fontenelle [J. P.], Acosta-Santos [A.], Lovejoy [N. R.], Liverpool [E.] & Kolmann [M. A.] 2026:12, Figs. 3, 4F, 5-11 [Neotropical Ichthyology v. 24 (no. 1): e250178; ref. 43011] Demerara River, Guyana, 6.543444, -58.243833. Holotype: CSBD F3620 [ex ROM 100073]. Paratypes: ROM. •Valid as Potamotrygon siponinmorok Hemraj-Naraine, Fontenelle, Acosta-Santos, Lovejoy, Liverpool & Kolmann 2026. Current status: Valid as Potamotrygon siponinmorok Hemraj-Naraine, Fontenelle, Acosta-Santos, Lovejoy, Liverpool & Kolmann 2026. Potamotrygonidae: Potamotrygoninae. Distribution: South America: Demerara River drainage, Region 4 (Demerara-Mahaica), Guyana, and Guanare River drainage, Orinoco River basin, Venezuela. Habitat: freshwater.