分類 / Names
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Teleostei >
Clupeiformes (Herrings) >
Ehiravidae (River sprats)
Etymology: Sundasalanx: Composed from Sunda, Asiatic island + latinization of Philippines, salamga, French salangana = the name of a kind of swallow (Ref. 45335).
More on authors: Britz & Kottelat.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
Asia: Mekong basin in Laos and Thailand.
亞洲: 寮國與泰國的湄公河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.8 cm SL 雄魚/尚未辨別雌雄; (Ref. 38648)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 12 - 15; 臀鰭軟條: 16 - 20; 脊椎骨: 38 - 42. Differs from all except S. praecox in having vomerine tooth plates (versus missing), more maxillary teeth (30, versus 12-19), 1-3 teeth on caudal end of basibranchial 1-2 in most specimens (versus missing), a completely ringed proximal end of epibranchial 3 surrounding third efferent branchial artery (versus partially encircled), and in lacking in midventral row of melanophores (versus presence). Differs from S. malleti in lacking a basipterygium pigment ring (versus presence). Differs from S. praecox in having several (3-5) prepectoral melanophores (versus missing), more vertebrae (38-42, versus 37-38) and no palatine teeth (versus presence). Differs from all other Sundasalangidae (except S. praecox and S. malleti) in lacking a cardiac chamber pigmentation (versus presence). Also differs from all congeners in having a dermethmoid, supraorbitals, hyomandibulars, autopterotics, exoccipitals, basioccipital and ventral hypohyals (versus these bones not ossified), more gill rakers on branchial arches (10-16 on first arch [versus 2-9], 9-11 on second and third arches, 7-9 anteriorly and 6-8 posteriorly on fourth arch, 6-7 on fifth arch).
有別於全部除了 S.之外早發的 有犛骨齒板 (對不見的), 更多的上顎齒 (30, 對 12-19),1-3 牙齒在尾部末端基鰓骨 1-2 在大多數的標本 (對不見的), 一完全地有環近側端上鰓骨 3 圍住第三個輸出的鰓動脈 (對部份地環繞), 與在沒有黑色素細胞的腹部中央列.(對出現) 有別於 S. malleti 在沒有鰭基軟骨有顏色環.(對出現) 有別於 S. 早發的 有一些 (3-5) prepectoral 黑色素細胞 (對不見的) ，更多的脊椎骨 (38-42, 對 37-38) 與沒有顎齒.(對出現) 有別於所有的其他 Sundasalangidae(除了 S. 以外早發的 與 S. malleti) 在沒有心臟的腔室顏色.(對出現) 在有一個方面也有別於所有的同類 dermethmoid, 眶上的, hyomandibulars ， autopterotics ，外枕骨，基枕骨與腹面 hypohyals(對不被鈣化的這些硬骨), 在鰓弓上的更多的鰓耙.(10-16 在第一鰓弓上 [對 29] 的,9-11 在第二個與第三個弓上,7-9 前面地與 6-8 在第四個弓後面,6-7 在第五個弓上)
Found mostly in large rivers with muddy bottom, turbid water and slow to moderate current. Caught by seine and push net. In all habitats where it was collected by push-net, it was only present at depths greater than 1 meter, usually at a depth immediately below those at which a slight drop in temperature could be felt. Located above the bottom, usually above a layer of 10-20 cm loose ooze.
用泥底部, 混濁的水與緩慢到中等的水流大部分發現於大河了。 被曳網與推網捕獲了。 在所有的棲息地在那裡它被由推網收集, 它是只出現在深度大於 1 公尺, 通常在深度緊鄰那些下方在那一個在溫度的輕微的下降可能是毛氈。 位於底部上面了, 通常在 10- 的層 20 公分鬆散的軟泥之上。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 寮國與泰國的湄公河流域。
Britz, R. and M. Kottelat, 1999. Sundasalanx mekongensis, a new species of clupeiform fish from the Mekong basin (Teleostei: Sundasalangidae). Ichthyol. Explor. Freshwat. 10(4):337-344. (Ref. 38648)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 17 February 2012
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00185 - 0.01127), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
