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Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Imparfinis: Latin, impar = unequal + Greek, finis, pinna = wing, fin (Ref. 45335); arceae: Name 'arceae' in honor of Dr.Mariangeles Arce Hernandez for her valuable contributions to
the studies of the systematics and evolution of catfishes.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal. Tropical
South America: Brazil.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 6.7 cm SL macho / no sexado; (Ref. 137469)
Descripción breve
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 6; Radios blandos anales: 7; Vértebra: 39. This species is distinguished by the following set of characters: wide, dark midlateral stripe from snout tip to caudal peduncle sharply contrasting pale underside and aligned with dark stripe centered on dorsal portion of lower caudal-fin lobe; 11-12 gill rakers on the first ceratobranchial; dark brown W-shaped band at the base of caudal peduncle absent; 39 vertebrae; maxillary barbel surpassing vertical through dorsal-fin origin; short, flexible extension of the pectoral- and dorsal-fin spines, and outermost primary rays of upper caudal-fin lobe absent (Ref. 137469).
Body shape (shape guide): elongated; Cross section: oval.
This species inhabits fast-flowing, clear-water streams, with marginal vegetation (Ref. 137469).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Silva, G.S.C., M.H. Sabaj Pérez, K.R.D Carvalho and C. Oliveira, 2025. Integrative Taxonomy Reveals a New Species of Imparfinis (Siluriformes: Heptapteridae) from the Upper Xingu River Basin. Ichthyology & Herpetology 113(1):143-153. (Ref. 137469)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00379 - 0.01743), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.1 ±0.5 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (10 of 100).
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