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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); xavante: Named for its type locality, Córrego Xavante. Xavante refers to the indigenous Brazilian ethnic group, inhabiting the region between the Rio das Mortes and Rio Culuene, Mato Grosso; also the stream at the type locality is named after this ethnic group.
Eponymy: The Xavante are an indigenous ethnic group who live in the region between Rio das Mortes and Rio Culuene, Mato Grosso, Brazil. They are the largest Amerindian tribe in the area where the rivuline species was discovered. (Ref. 128868), visit book page.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar bentopelagis. Tropical
South America: Rio Culuene watershed, upper Rio Xingu drainage in Brazil.
Ukuran / Berat / umur
Kematangan: Lm ? range ? - ? cm
Max length : 2.8 cm SL jantan/; (Ref. 75787)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 12 - 13; Sirip dubur lunak: 9 - 10; vertebrata, bertulang belakang: 32 - 33. Belongs to a group of species, including Characidium nupelia, distinguished uniquely by having high number (12-18) of dark vertical bars on the body, each bar having the width of a scale. Diagnosed by a lower number of scales around the caudal peduncle (10 vs. 12 or more in most Characidium species). Differs from Characidium nupelia by its wider interorbital region (interorbital distance 30.1-38.0 vs. 20.5-28.6% HL) and lower caudal peduncle (caudal peduncle depth 35.4-44.9 vs. 46.2-57.8% HL). Additional conspicuous external characters that are not unique but are helpful in the identification of this species include absence of adipose fin, incomplete lateral line, and presence of a dark blotch on the caudal peduncle (Ref. 75787).
Body shape (shape guide): elongated.
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
da Graça, W.F., C.S. Pavanelli and P.A. Buckup, 2008. Two new species of Characidium (Characiformes: crenuchidae) from Paraguay and Xingu River Basins, State of Mato Grosso, Brazil. Copeia 2008(2):326-332. (Ref. 75787)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00452 - 0.02316), b=3.07 (2.89 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Tingkat Trofik (Acuan
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
Kerentanan Penangkapan Ikan (Ref.
59153): Low vulnerability (10 of 100).
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