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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Xenurobryconinae
Etymology: metae: Specific name refers to the Meta State in eastern Colombia, where the new species was collected.
Eponymy: This is a toponym; generally referring to the Río Meta in the Colombian and Venezuelan Orinoco River system. In the case of the Tyttocharax it refers to Meta State, eastern Colombia. (Ref. 128868), visit book page.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal; pH range: 7.1 - 7.6; rango de profundidad 0 - 3 m (Ref. 91745). Tropical
South America: Río Güejar system in Meta State, La Macarena Mountains, Orinoco basin, Colombia.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 1.9 cm SL macho / no sexado; (Ref. 91745)
Descripción breve
Claves de identificación | Morfología | Morfometría
Vértebra: 40 - 41. Diagnosed from other species of the genus Tyttocharax by the presence of bony hooks on the pectoral and caudal-fin rays (vs. absence). Differs from Tyttocharax madeirae and Tyttocharax cochui by the absence of adipose fin (vs. presence), in having larger bony hooks on the anal fin than on the rays of the pelvic fins (vs. bony hooks of the same size on the rays of those fins). Can be separated from Tyttocharax cochui in having i,5-6 pectoral-fin rays (vs. i,7); from Tyttocharax tambopatensis by absence of a sexually dimorphic color pattern in life (vs. presence of sexually dimorphic color pattern,
males have bright orange abdomens), by having 4 scales rows between anal-fin origin and lateral line (vs. 6), by the 4 scale rows between pelvic-fin and lateral line (vs. 6), by the number of 5-6 branched pectoral-fin rays (vs. 7); by iii unbranched dorsal-fin rays (vs. ii) and distance between the dorsal and anal-fin origins, 22.3% to 32.2% SL (vs. 38.0-41.0% SL) (Ref. 91745).
Found in streams characterized by relatively rapid water current, running over rocky and sandy bottoms at altitudes between 264- 282 m a.s.l., high dissolved oxygen (5.7-7.1 mg/l) and having tea colored water with usually high transparency (Ref. 91745).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Román-Valencia, C., C.A. García-Alzate, R.I. Ruiz-C. and D.C.B. Taphorn, 2012. A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar River, Orinoco River Basin, Colombia. Neotrop. Ichthyol. 10(3):519-525. (Ref. 91745)
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) |
PD50 = 0.5625 [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). |
Nivel trófico (Referencia 69278) |
3.0 ±0.4 se; based on size and trophs of closest relatives |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |