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> Siluriformes (Catfishes) > Ariidae (Sea catfishes) > Ariinae
Etymology: Potamarius: Greek, potamos = river (Ref. 45335); usumacintae: The specific name refers to the Río Usumacinta basin, where this species occurs..

Environment: milieu / climate zone / depth range / distribution range Ecología

; agua dulce demersal. Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Central America: endemic to the Río Usumacinta basin in Guatemala and Mexico.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 59.5 cm SL macho / no sexado; (Ref. 75770)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 1; Radios blandos dorsales (total) : 7; Radios blandos anales: 19 - 23. Distinguished from other freshwater ariids occurring in Mesoamerica by the following combination of characters: presence of accessory tooth patches on palate; premaxillary tooth band length 2.4-2.9 in its width; ; snout length 1.4-1.8 in postorbital length; lateral gill rakers on first gill arch 17-20 (mode 19); mesial gill rakers on first two gill arches well developed; accessory palatal patches with numerous pointed-conical teeth; premaxillary maxillary barbel not extending behind gill membrane; and dorsomedian fleshy groove on head absent (Ref. 75770).

Occurs only in freshwater, preferring the main channel of medium to large rivers (Ref. 75770).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador : Ferraris, Jr., Carl J. | Colaboradores

Betancur-R., R. and P.W. Willink, 2007. A new freshwater ariid (Otophysi: Siluriformes) from the Río Usumacinta Basin. Copeia 2007(4):818-828. (Ref. 75770)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 07 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Traumatogenic (Ref. 58010)

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
componentes alimenticios
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 3.7 ±0.4 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (49 of 100).

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Potamarius usumacintae Betancur-R. & Willink, 2007