An updated list of the ichthyofauna of Ipanema National Forest, São Paulo, Brazil Author Smith, Welber Senteio Author Halcsik, Leticia Author Biagioni, Renata Cassemiro Author Pinheiro, Lúcio Antônio Stefani Author Severino Stefani, Marta text Check List 2021 2021-05-31 17 3 827 840 http://dx.doi.org/10.15560/17.3.827 journal article 10.15560/17.3.827 1809-127X Hypostomus ancistroides (Ihering, 1911) Figure 2R Material examined. BRAZIL – São Paulo • Iperó , Ipanema River ; 23°22.40′S , 049°38.51′W ; 560 m alt; 10.II. 2012 ; W.S. Smith and L. Halcsik leg.; hand nets; LEEF 115146 , LEEF 115171 ( 18 spec. , 80.0−190.0 mm SL) . Identification. Deep body; inferior mouth; teeth bifid; premaxilla with 24–33 teeth and dentary with 23–35 teeth. Mid-lateral series with 27 or 28 plates, pre-dor- sal series with 3, and dorsal- fin base series with 8 or 9 plates. Dorsal fin with I,7 rays; pectoral fin with I,6; pel- vic fin with i,5; and anal fin with 6 rays. Brown ground color; dark brown blotches on body, especially on the dorsal region; dark fins with dark brown spots (Batista- Silva et al. 2018).