Dorsal spines (total): 1; Dorsal soft rays (total):
6 - 6; Anal soft rays: 16 - 18. Body extremely elongate,
predorsal distance 26-28% of SL; and dorsal spine
thin, weakly ossified and prolonged well beyond tip
of first ray as long flexible filament. Appears restricted
to the deep, rather swift channels of very large whitewater
rivers. Can be readily identified by the very long
filament to the dorsal. Colouration:
Has black colouring to the base of dorsal, pectoral,
ventral and caudal peduncle. Very striking if rare
Amazon River basin. Type locality:
Jurua River, Brazil.
2005 Taxonomic assessment of Leptodoras (Siluriformes:
Doradidae) with descriptions of three new species.
Neotrop. Ichthyol. 3(4):637-678.