Racenisia fimbriipinna Mago-Leccia 1994

Body abruptly attenuated caudally; 23 precaudal vertebrae; cranium higher than in other members of the family; anal rays covered by a thick tissue, giving an undulated shape to the anal fin; basibranchials not ossified (cartilaginous matrices); tail about 1/5 of anal fin base; lateral line incomplete; no scalation on dorsoanteriorly and middorsally.

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analsoft rays: 171 - 193; Vertebrae: 94 - 97

Racenisia fimbriipinna is a species of bluntnose knifefish endemic to Venezuela. This species can reach a length of 11.7 centimetres (4.6 in) TL. It is the only member of its genus.