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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); macrophthalmus: Specific name is derived from the Greek makrós (large) and ophthalmós (eye), an uncommon condition among species of Trichomycterus.
More on authors: Barbosa & Costa.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal. Tropical
South America: Known only from the type locality, a small stream tributary to upper Piraí river, Araras hill, upper Paraíba do Sul river basin, Brazil.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 6.0 cm SL macho / no sexado; (Ref. 89884)
Descripción breve
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 11; Radios blandos anales: 9; Vértebra: 35 - 36. Distinguished from all congeners from southeastern Brazil by having nine pleural ribs (vs. 10- 17). This is similar to Trichomycterus travassosi and distinguished from all other species of southeastern Brazil by having shorter nasal barbel, its tip reaching eye (vs. between middle of the distance eyeopercular patch of odontodes and pectoral-fin base). Can be separated from T. travassosi by having larger eye (13.2 - 14.6% of head length, vs. 8.5- 10.7 %) and dorsal and lateral midline spots coalesced to form transverse bars (vs. lateral midline spots not confluent to dorsal spots) (Ref. 89884).
Found actively swimming during day time in shallow places (20-40 cm deep) with fast flowing water, usually on gravel substratum, sometimes partially burrowed in the sand (Ref. 89884). Sympatric with Trichomycterus claudiae (Ref. 89884).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Barbosa, M.A. and W.J.E.M Costa, 2012. Trichomycterus macrophthalmus (Teleostei: Siluriformes: Trichomycteridae), a new species of catfish from the Paraíba do Sul river basin, southeastern Brazil. Verteb. Zool. 62(1):79-82. (Ref. 89884)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
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=0.00912 (0.00396 - 0.02102), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (10 of 100).
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