Pimelodella

1. Body with two dark-brown longitudinal bands, one along the lateral line and one slightly below the dorsal fin .................................................................... P. avanhandavae

1’. Body with only a dark-brown longitudinal band, along the lateral line...................................................................... 2 2. First dorsal-fin ray not prolonged in a filament, in adults ..................................................................... P. gracilis

2’. First dorsal-fin ray extended in a filament, in adults .... ......................................................................... P. taenioptera