Leporellus is a genus of headstander-relatives in family Anostomidae, part of the broader Characiformes group that also includes the piranhas and pacus in this section of the atlas. The genus name, and the common name of one of its species - the yellow rabbit characin, Leporellus vittatus - point to a trait shared with the better-known genus Leporinus: a blunt, protruding snout and lip structure that has earned several anostomid genera a 'rabbit' nickname. The atlas records the genus from Brazil, Paraguay, and Peru, and its three species - L. cartledgei, L. pictus, and L. vittatus - are fairly large for the family, running 10–12 in.
Like many anostomids, Leporellus is thought to be a largely herbivorous or omnivorous grazer of algae, plant material, and detritus, and some genera in the family are known for an oblique, head-down resting posture, though this has not been specifically documented for Leporellus in the sources available here. None of the three species has an established place in the aquarium trade. Conservation data are limited: one atlas species is rated Least Concern, and the other two have not yet been formally evaluated.