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Siluriformes (Catfishes) >
Lacantuniidae (Chiapas catfishes)
Etymology: Lacantunia: Named for Rio Lacantún in Chiapas, the tributary river of Rio Usumacinta inhabited by the new catfish; enigmatica: From the Latin name 'enigmatica' = baffling or inexplicable, for the unexpected discovery, obscure relationships and origin.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce pelagico; distribuzione batimetrica 0 - 18 m (Ref. 54757). Tropical
North America: Mexico.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 42.7 cm SL maschio/sesso non determinato; (Ref. 54757); 40.6 cm SL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 8 - 10; Spine anali: 0. This species is distinguished from all other siluriforms by the following uniquely derived and anatomically complex characteristics: fifth infraorbital bone relatively wide and thick-walled, boomerang-shaped and anteriorly convex, and remote from a markedly prominent sphenotic process; the lateral margin of skull thickened along frontal bone and adjacent parts of lateral ethmoid and sphenotic bones at origins of much enlarged adductor mandibulae and levator arcus palatini muscles, otherwise the skull roof medial to muscle origins severely constricted, flat, lacking crests and fossae; a pair of cone-shaped "pseudo-pharyngobranchial" bones at anterior tips of enlarged accessory cartilages medial to first and second epibranchials; a hypertrophied, axe-shaped uncinate process on third epibranchial; gas bladder with paired spherical, unencapsulated diverticulae protruding from anterodorsal wall (Ref. 54757).
Body shape (shape guide): elongated.
Adults inhabit deep river channels and pools with rocks and strong eddy currents. sometimes taken in stream mouths; collected in both high and low water seasons, and generally during the night. Food includes fishes, crabs, prawns, and large and tough seeds (Ref. 54757). Migratory behaviour is undetermined (Ref. 126106).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Rodiles-Hernández, R., D.A. Hendrickson, J.G. Lundberg and J.M. Humphries, 2005. Lacantunia enigmatica (Teleostei: Siluriformes) a new and phylogenetically puzzling freshwater fish from Mesoamerica. Zootaxa 1000:1-24. (Ref. 54757)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Livello trofico (Fonte Biblio. 69278) |
3.3 ±0.54 se; based on food items. |
Vulnerabilità della pesca (Ref. 59153) |
Moderate vulnerability (41 of 100). 🛈 |