Figure 4 from: Roxo F, Zawadzki C, Troy W (2014) Description of two new species of Hisonotus Eigenmann & Eigenmann, 1889 (Ostariophysi, Loricariidae) from the rio Paraná-Paraguay basin, Brazil. ZooKeys 395: 57-78. https://doi.org/10.3897/zookeys.395.6910

Figure 4 - Ventral view of abdominal region of three species of Hisonotus, arrows indicate anal membrane in Hisonotus oliveirai (A, D) and Hisonotus paresi (B, E) contrasting with the lack of the anal membrane in Hisonotus chromodontus (C, F). A Hisonotus oliveirai, MZUSP 115061, holotype, female, 26.4 mm SL B Hisonotus paresi, MZUSP 115062, holotype, female, 26.2 mm SL C Hisonotus chromodontus, LBP 7964, female, 28.1 mm SL D Hisonotus oliveirai, NUP 3578, male, 27.1 mm SL E Hisonotus paresi, NUP 10928, male, 24.2 mm SL F Hisonotus chromodontus, LBP 12278, male, 26.7 mm SL.