Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Characiformes
(Characins) > Lebiasinidae
(Pencilfishes) > Lebiasininae
Etymology: Lebiasina: Derived from Greek, lebias, lebiou = a kind of fish (Ref. 45335); ardilai: The specific epithet is in honor of Carlos Ardila Rodríguez for his numerous contributions to the systematics of the Lebiasininae. A noun (Ref. 93551).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Tropical
South America: Guyana. Endemic to the upper Mazaruni River drainage and it is known from the Arabaru, Kukui, Membaru, Waruma and Mazaruni rivers (Ref. 93551).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.4 cm SL male/unsexed; (Ref. 93551)
Morphology | Morphometrics
Lebiasina ardilai is distinguished from all lebiasinins by its color pattern consisting of a narrow, nearly straight primary stripe, extending from posterior to humeral blotch to near the vertical through anal-fin origin, being nearly absent in females and conspicuously marked in males; the presence of four series of dark markings at the base of the scales of longitudinal series 2–5; the faint secondary stripe running onto scales of second and third longitudinal row of scales; and the posteriorly displaced caudal blotch, not reaching the posterior tip of caudal peduncle. The new species also differs from its Guyana Shield relatives L. taphorni Ardila-Rodríguez, L. unitaeniata (Günther), L. uruyensis Fernandez-Yépez, Lebiasina yepezi Netto-Ferreira et al. and L. yuruaniensis Ardila-Rodríguez by the lack of the intermediate stripe (Ref. 93551).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Netto-Ferreira, A.L., H. Lopez-Fernandez, D.C. Taphorn and E.A. Liverpool, 2013. New species of Lebiasina (Ostariophysi: Characiformes: Lebiasinidae) from the upper Mazaruni River drainage, Guyana. Zootaxa 3652(5):562-568 (Ref. 93551)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .