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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Tridentinae
Etymology: Potamoglanis: Derived from the Greek potamo, means river; the gods of rivers in the Greek mythology, and from glanis, means catfish; wapixana: The wapixana refers to a native tribe from the Serra da Lua region in western Roraima state, northern Brazil. This native tribe has occupied this region for, at least, three centuries. The new species was mainly collected in the villages of Cantá and Bonfim situated in this region. The Wapixana tribe was under oppression by other native tribes and by colonizers, fact that contributed for a huge cultural loss (Ref. 116786).
Eponymy: The Wapisâna (also given as Wapishana, Wapisiana or Wapixana) are an Amerindian tribe who inhabit the region in northern Brazil where these species occur. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / kisaran kedalaman / distribution range
Ekologi
; air tawar dasar (demersal). Tropical
South America: Branco and Negro river drainages, Amazonas river basin in Brazil.
Size / Weight / umur
Kematangan: Lm ? range ? - ? cm
Max length : 1.6 cm SL jantan/; (Ref. 116786)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 7 - 8; Sirip dubur lunak: 7; vertebrata, bertulang belakang: 34 - 36. Trichomycterus wapixana is distinguished from all congeners of Trichomycterus hasemani group by having 34 to 36 vertebrae (vs. 32 in T. hasemani and T. johnsoni, 29 to 32 in T. anhanga) and anal-fin origin in a vertical through the base of the 20th, 21st or 22nd vertebra (vs. 18th in T. hasemani, 17th in T. johnsoni and 16th in T. anhanga). It differs from T. hasemani and T. johnsoni by having the origin of the pelvic fin in a vertical between the base of 15th and 17th vertebrae (vs. 14th in T. hasemani and 13th in T. johnsoni) and a dark spot on the middle of the lower lip (vs. absent). It is distinguished from T. anhanga by having pelvic fins and girdle (vs. absent), 10 to 11 dorsal procurrent rays in the caudal fin (vs. 6 to 8), 9 to 12 ventral procurrent rays in the caudal fin (vs. 6 to 7), seven (ii +5 or iii + 4) anal-fin rays (vs. ii + 4), five (i + 4 or ii + 3) pectoral fin rays (vs. i + 2), dorsal-fin origin at vertical through the base of the 20th, 21st or 22nd vertebra (vs. 16th or 17th), 6 branchiostegal rays (vs. 4 or 5), two pairs of pleural ribs on first two vertebrae posterior to Weberian Complex (vs. single pair), a series of dark brown spots in the lateral midline of the body (vs. absent), broad palatine (vs. narrow, comma-shaped palatine), and parasphenoid present (vs. absent). It can be separated further from T. johnsoni by the origin of the urogenital pore in a vertical between the base of the 17th and 19th vertebrae (vs. 15th) (Ref. 116786).
Body shape (shape guide): elongated.
Found in marginal vegetation of small streams (Ref. 116750).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Henschel, E., J.L.O. Mattos, A.M. Katz and W.J.E.M. Costa, 2018. Position of enigmatic miniature trichomycterid catfishes inferred from molecular data (Siluriformes). Zoologica Scripta 2017:1-10. (Ref. 116750)
Status IUCN Red List (Ref. 130435: Version 2025-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: tidak ada kepentingan
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Acuan
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: 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).
Trophic level (Acuan
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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