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> Siluriformes (Catfishes) > Heptapteridae (Three-barbeled catfishes)
Etymology: Imparfinis: Latin, impar = unequal + Greek, finis, pinna = wing, fin (Ref. 45335); timana: Timana is used as a noun in apposition and refers to the indigenous people inhabiting the west flank of the eastern cordillera, in the Colombian Andes, from San Agustin to Pitalito (Departamento del Huila).

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

; agua dulce bentopelágico. Tropical

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

South America: Colombia. Known from the type locality at the río Guarapas, a small tributary of the upper río Magdalena basin (Ref. 88952).

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.7 cm SL macho / no sexado; (Ref. 88952)

Short description Claves de identificación | Morfología | Morfometría

Small heptapterid catfish (largest specimen 76.7 mm SL), with elongated body, triangular in cross-section at dorsal-fin origin, progressively more laterally compressed to tail region. Dorsal profile slightly convex from snout tip to dorsal-fin origin, slightly concave just posterior to dorsal-fin base to adipose-fin origin, straight and descending along adiposefin base, then ascending along caudal peduncle. Ventral profile of head straight, slightly convex along abdomen, then straight to anal-fin origin and slightly descending along caudal peduncle (Ref. 88952).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador : Bockmann, Flavio | Colaboradores

Ortega-Lara, A., N. Milani, C. DoNascimiento, F. Villa-Navarro and J.M. Maldonado-Ocampo, 2011. Two new trans-Andean species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from Colombia. Neotrop. Ichthyol. 9(4):777-793. (Ref. 88952)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 09 October 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
componentes alimenticios
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consumo de alimento
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Ecology
Ecología

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 3.1 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Imparfinis timana Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldonado-Ocampo, 2011