Fig. 2 in Morphology of lateral line canals in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) from Negro River, Brazilian Amazon

Fig. 2. Lateral line canals on the dorsal (D) and ventral (V) surfaces, divided in three sections to quantify neuromasts in Potamotrygon motoro and P. orbignyi. A) anterior; C) central, and P) posterior. HYO) hyomandibular canal; IO) infraorbital canal; MAN) mandibular canal; NS) nasal canal; PLL) posterior lateral line canal; SO) supraorbital canal.