Ichthyofauna of the ribeirão Sucuri, a tributary of the rio Tietê, upper rio Paraná basin, southeastern Brazil Author Reia, Lais Author S. da Costa e Silva, Gabriel Author Garcia-Ayala, James R. Author P. F. Vicensotto, Ana Maria Author Benine, Ricardo C. text Check List 2020 2020-06-16 16 3 711 728 http://dx.doi.org/10.15560/16.3.711 journal article 10.15560/16.3.711 1809-127X Hisonotus francirochai ( Ihering, 1928 ) Figure 3 AB Original description. Otocinclus francirochai Ihering 1928: 2 . Material examined. BRAZIL • 52, 19.4−29.3 mm SL; São Paulo state , Pongaí , Córrego Santa Rosa ; 21°46′29″S , 049°23′34″W ; 12 May 2018 ; leg. Silva G.S.C. and Reia L. ( LBP 26471 ) • 1, 31.5 mm SL; São Paulo state , Pon- gaí, Córrego Zanata ; 21°47′02″S , 049°22′44″W ; 12 May 2018 ; leg. Silva G.S.C. and Reia L. ( LBP 26483 ) . Identification. Body elongated; mouth ventral; maxil- lary barbel short, slender and free distally; teeth slender and bicuspid, central cusp larger than lateral; premax- illa with 17 to 21 teeth; dentary with 16 to 22 teeth. Body covered by odontodes; odontodes of snout larger in size than remaining in head; tuft of enlarged odontodes on posterior tip of parieto-supraoccipital; odontodes on head and trunk well defined, randomly arranged; body completely covered by bone plates, median series 24 or 25 perforated plates by lateral line; cleithrum and cora- coid completely exposed; abdomen partially covered by plates; lateral abdomen plates larger and forming regu- lar rows of three or four elongated plate on each sides; median abdominal plate absent; small anal plates pres- ent. Overall body coloration darkened; dorsal, anal, pec- toral, and pelvic fins hyaline; caudal fin black with two rounded hyaline areas, large on dorsal and small on ventral lobes.