Classification / Names
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Characiformes (Characins) >
Lebiasinidae (Pencilfishes) > Lebiasininae
Etymology: Lebiasina: Derived from Greek, lebias, lebiou = a kind of fish (Ref. 45335); marilynae: Named for Marilyn J. Weitzman, who devoted her career to the study of fishes of the families Lebiasinidae and Characidae. A noun.
Eponymy: Mrs Marilyn Jean Weitzman née Sohner (d: 1926) is a Research Associate at the Smithsonian, where she has devoted her career to the study of fishes of the Lebiasinidae and Characidae families. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce benthopelagico. Tropical
South America: Rio Curuá, rio Xingu basin, Brazil.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 8.9 cm SL maschio/sesso non determinato; (Ref. 91748)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 10 - 11; Raggi anali molli: 11. Distinguished from all lebiasinins by having a color pattern consisting of a slightly concave
primary stripe, extending from the tip of the snout to the distal border of the caudal peduncle, a series of approximately 14 small blotches running nearly parallel to the primary stripe along
the ventrally adjacent longitudinal series of scales and converging towards the stripe near the anal fin origin, and the lack of a secondary stripe. Can be further diagnosed from its congeners by having a pair of foramina on the ventral surface of the vomer through which the ramus palatinus of the facial nerve passes, the round dorsal surface of the mesethmoid and the absence of an adipose fin (vs. vomer lacking a pair of foramina, ramus palatinus of the facial
nerve passing lateral to the vomer; and a T-shaped dorsal surface of the mesethmoid (Ref. 91748).
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Netto-Ferreira, A.L., 2012. Three new species of Lebiasina (Characiformes: Lebiasinidae) from the Brazilian Shield border at Serra do Cachimbo, Pará, Brazil. Neotrop. Ichthyol. 10(3):487-498. (Ref. 91748)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00273 - 0.01753), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
