Species: Narcine bancroftii, Bancroft’s numbfish, Lesser electric ray

Narcine bancroftii (Griffith & Smith, 1834)

Bancroft’s numbfish, Lesser electric ray

Elongate oval disc, front strongly convex, soft, flaccid edges; well-developed electrical organs visible as kidney-shaped mounds on either side of the head; nostrils with only one opening; eyes normally developed, not covered by skin; mouth small, tubular, protractile; central teeth extending onto lips and exposed when mouth is closed; 2 large, similar sized, pointed dorsal fins; outer part of inner edge of pelvic fins not joined to side of tail; thick tail, membranous fold between center of 1st dorsal base & origin of tail fin; tail fin well developed, triangular, upper and lower lobes continuous around the tip.