Fig. 3 in Two new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the rio Paraguay basin, with a redescription of Hypostomus cochliodon Kner, 1854

Fig. 3. Opercle morphology of (a) Hypostomus cochliodon, NUP 10809, 215.8 mm SL, showing indistinct opercle without odontodes; (b) Hypostomus basilisko, holotype, MZUSP 111110, 182.5 mm SL and (c) Hypostomus khimaera, holotype, MZUSP 111129, 139.1 mm SL, showing layer of skin surrounding opercle that supports odontodes.