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Cypriniformes (Carps) >
Gastromyzontidae (Hillstream loaches)
Etymology: elongata: Specific name from the Latin elongatus which means elongate.
Eponymy: Lieutenant-Colonel Robert Beresford Seymour Sewell CIE. [...] (Ref. 128868), visit book page.
More on author: Roberts.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar dasar (demersal). Tropical
Asia: Se Kong of the Mekong basin.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 7.3 cm SL jantan/; (Ref. 38650)
vertebrata, bertulang belakang: 35 - 37. The following combination of characters distinguished this species from its congeners: body without dark stripes; paired fins with no concentric bands; pelvic fin reaching beyond anus; general appearance elongated; body width at the origin of dorsal fin 20.7-24.4% SL; caudal peduncle depth 8.0-9.6 % SL; caudal peduncle length 1.0-1.2 times in its depth; predorsal length 46.5-49.5% SL; pelvic-fin origin in front of dorsal-fin origin; absence of cavity around mouth; skin-fold between oropectoral membrane and ventral surface of head running from pectoral-fin origin to second rostral barbel; tubercles on top of head concentrated on lateral parts of snout; absence of large tubercles on branched pectoral-fin rays 15-21; and 65-70 lateral line scales. Very dark, almost black when alive; color pattern changes after preservation (Ref. 40433).
Body shape (shape guide): elongated.
Occurs in moderately high gradient forested montane stream with large boulders, a coarse gravel or sandy bottom and some logs. Also found in an extremely high gradient, tumultuous mountain stream with huge boulders and coarse gravel bottom.
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
Roberts, T.R., 1998. Systematic revision of the balitorid loach genus Sewellia of Vietnam and Laos, with diagnoses of four new species. Raffles Bull. Zool. 46(2):271-288. (Ref. 38650)
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) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00646 (0.00283 - 0.01475), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.6 ±0.4 se; based on size and trophs of closest relatives |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |