Taxonomy & naming
L314 is a DATZ L-number, a trade code from the system started in 1988 for imported loricariids not yet identified, so the form has no describing authority and no type specimens. The registry lists it as Leporacanthicus sp. "L 314" and PlanetCatfish as Leporacanthicus sp. (L314); the registry also gives LDA056 as a related code. Sultan Pleco belongs first to Leporacanthicus joselimai (L264) in the atlas, and the German trade name is Curuá-Una-Rüsselzahnwels. The literature cited is Seidel and Evers's Welsatlas 2, the Miniatlas L-Welse, Das Aquarium 05/00, aquaristik 2/2017 and a Seidel article on the form.
Morphology
The registry gives about 8 in total length and no description of pattern or body shape, so the diagnostic characters of L314 are not on record. Leporacanthicus sp. L263 and Leporacanthicus joselimai (L264) are listed as similar fishes. The atlas's account of L. joselimai notes that L263 and L314 are superficially similar but differ consistently, a point the registry does not spell out.
Habitat
L314 is recorded from the Rio Curuá-Una in Pará, Brazil, in the Amazon system, in clearwater. Habitat place, substrate and sympatric fishes are not on record for this form.
Feeding
Carnivore is the registry's diet class, so the aquarium diet rests on meaty foods such as frozen fish and invertebrate foods; whether it eats plants is not recorded. No field diet data are on record.
Mating
The registry's sexing note is a genus-level statement for Leporacanthicus: males are markedly slimmer, with a longer, broader head region and a more pointed, narrower genital papilla. Leporacanthicus are typically cave spawners, the male guarding the eggs and larvae in the cave, and the registry treats the cave requirement as standard for the genus.
Breeding
No aquarium breeding is recorded for L314 itself. The registry does list known hybrids with Leporacanthicus triactis (L91), without further detail. Clutch size, spawning site and rearing of the young are undocumented for this form.
In the aquarium
The registry's keeping range is 79–86 °F and pH 5.0–7.0, with a recommended tank length of 47 in; these are aquarium figures, not field measurements. A small group is recommended, though a single fish can be kept. A carnivorous pleco from a clear river needs clean, well-oxygenated water with current and caves or rock cover, and territorial behaviour toward other plecos is common.
Conservation
L314 has not been assessed by the IUCN Red List; an undescribed form has no formal status. The registry records it as not on Brazil's 2012 positive list of species cleared for ornamental export and not on the 2020 negative list. Collecting for the trade and river engineering affect some L-number habitats, but nothing specific is recorded for the Curuá-Una population.