Guyanancistrus is a genus of suckermouth armored catfishes. Species There are currently 8 recognized species in this genus: Guyanancistrus brevispinis (Heitmans, Nijssen & Isbrücker, 1983) Guyanancistrus brownsbergensis Mol, Fisch-Muller & Covain, 2018 Guyanancistrus longispinis (Heitmans, Nijssen & Isbrücker, 1983) Guyanancistrus megastictus Fisch-Muller, Mol & Covain, 2018 Guyanancistrus nassauensis Mol, Fisch-Muller & Covain, 2018 Guyanancistrus niger (Norman, 1926) Guyanancistrus tenuis Fisch-Muller, Mol & Covain, 2018 Guyanancistrus teretirostris Fisch-Muller, Mol & Covain, 2018 References Fish of South America Hypostominae Ray-finned fish genera