Sorubim maniradii Littmann, Burr, and Buitrago Suarez 2001 ^ZBK

Fig. 13 (Holotype), Fig. 14

Holotype. FMNH 108814 (252 mm SL). Ecuador, Napo State, Río Yasuni, Río Napo drainage, 0° 59’06”S, 75° 25’36” W. 24 October 1981, D. Stewart et al.

Diagnosis: Distinguished from all other species of Sorubim ^ZBK by an extremely high gill raker count (31-37, Fig. 1B) and a diffuse lateral-line stripe (Fig. 13).

Etymology: The name maniradii; “mani,” Latin for many or multiple and “radii,” Latin for rakers, in reference to the high number of gill rakers on first pharyngeal arch found in members of this species relative to congeners.

Distribution: Known primarily from tributaries along the upper Amazon basin ( Ríos Napo, Marañon, Ucayali, Mamore, Madeira, Javari), with at least one specimen collected in the mainstem Amazon near Manaus (Fig. 10). This species probably occurs in Colombian tributaries of the Amazon.