bifax, Guyanancistrus brevispinis Fisch-Muller [S.], Mol [J. H. A.] & Covain [R.] 2018:35, Figs. 8g-h, 9-10 [PLoS ONE v. 13 (no. 1) e0189789; ref. 35723] Crique Petit Laussat, right tributary of Mana River, French Guiana, 05˚24'28.6"N, 53˚34'53.6"W. Holotype: MNHN 2017-0448 [ex MHNG 2734.090]. Paratypes: MHNG, MNHN. Plus additional non-type material. •Synonym of Guyanancistrus brevispinis (Heitmans, Nijssen & Isbrücker 1983). Current status: Synonym of Guyanancistrus brevispinis (Heitmans, Nijssen & Isbrücker 1983). Loricariidae: Hypostominae. Distribution: Maroni to the Mana and Sinnamary River basins, French Guiana (this subspecies). Habitat: freshwater.