maximus, Ancistrus de Oliveira [R. R.], Zuanon [J.], Zawadzki [C. H.] & Rapp Py-Daniel [L. H.] 2015:76, Figs. 1-2, 4 [Ichthyological Exploration of Freshwaters v. 26 (no. 1); ref. 33869] Roraima, Rorainópolis, Macoari stream, tributary to right side of rio Branco, 1°09'12.1"S, 61°50'40.8"W, Brazil. Holotype: INPA 25629. Paratypes: INPA, MHNG, MZUSP, NUP. Type catalog: Oliveira et al. 2022:18 [ref. 39255]. •Valid as Ancistrus maximus de Oliveira, Zuanon, Zawadzki & Rapp Py-Daniel 2015 -- (de Oliveira et al. 2016:78 [ref. 34368], de Souza et al. 2019:62 [ref. 36504]). Current status: Valid as Ancistrus maximus de Oliveira, Zuanon, Zawadzki & Rapp Py-Daniel 2015. Loricariidae: Hypostominae. Distribution: South America: Rio Branco drainage (Roraima, Brazil). Habitat: freshwater.