分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cypriniformes (Carps) >
Gastromyzontidae (Hillstream loaches)
Etymology: Gastromyzon: Greek, gaster = stomach + Greek, myzo = to suckle (Ref. 45335); extrorsus: From the Latin adjective extrorsus, meaning in an outward direction, referring to the occurrence of this species only in the coastal river basins draining from the west side of the Crocker Range in Sabah.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 居於水底的; pH range: 7.9 - ?. 熱帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Asia: Kimanis and Petagas River basins in Sabah, Malaysia.
亞洲: 在馬來西亞的沙巴 Kimanis 與 Petagas 河流域。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 7.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 57871)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 7; 臀鰭軟條: 4; 脊椎骨: 30 - 32. Can be distinguished from other species of the genus by possessing the following unique combination of characters: presence of distinct secondary rostrum; presence of complete post-oral pouch; body brown with up to 9 thin gold bars, head dorsum dark brown with thin gold reticulate pattern; subopercular groove absent; gill slit vertical; sublacrymal groove present; a truncate snout when viewed dorsally; abdomen without scales; lateral line scales 69-77; pelvic fin just touching anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin (Ref. 57871).
Body shape (shape guide): elongated.
能被藉由持有下列的獨特組合特徵與其他種本屬區分: 有明顯的第二喙; 有完全的後口部的小袋; 身體褐色的有向上到 9條細的金色橫帶, 頭部背面深褐色的有薄金色的網狀圖案; 子鰓蓋凹槽不存在; 鰓縫垂直的; sublacrymal 凹槽呈現; 一個截形的吻當背面看了; 腹部沒有鱗片; 側線鱗片 69-77; 腹鰭正好碰觸臀鰭起源，不部分重疊程度的臀鰭起源的緊貼的背鰭.(參考文獻 57871)
Occurs in unshaded fast flowing rivers with boulder, rock and sand substratum (Ref. 57871).
出現於無遮蔽的快速流動的河有大圓石, 岩石與沙子下層土壤.(參考文獻 57871)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 在馬來西亞的沙巴 Kimanis 與 Petagas 河流域。
Tan, H.H., 2006. The Borneo suckers. Revision of the torrent loaches of Borneo (Balitoridae): Gastromyzon, Neogastromyzon). Kota Kinabalu, Sabah, Malaysia : Natural History Publications (Borneo) in association with Raffles Museum of Biodiversity Research. vii, 245 p. : ill. (some col.), maps ; 26 cm. (Ref. 57871)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
近危 (NT) (B1ab(i,ii,iii)+2ab(i,ii,iii)); Date assessed: 31 December 2018
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00268 - 0.01421), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.0 ±0.1 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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