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Teleostei >
Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Amphiliinae
Etymology: Amphilius: Greek, amphi = on both sides + Greek, leios = fat.
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶; 20°C - 24°C (Ref. 12468); 5°N - 3°S
Africa: Lake Edward drainage (Ref. 41590, 103388), Lake George drainage (Ref. 4903, 51677, 103388) and Kagera River drainage, part of Lake Victoria basin (Ref. 103388). Also Rufiji River basin, Rugufu River and Rusizi River (Ref. 46152, 98755). Reports from the upper Congo basin refer to Amphilius frieli (Ref. 103388); those from Lake Victoria drainage in Kenya, Lake Kyoga drainage and Lake Manyara affluents to Amphilius lujani; and those from Lake Rukwa basin and Malagarazi River to Amphilius pedunculus (Ref. 103388).
非洲: Hima 河， Aduka 與 Agoye 河 (烏干達) ， Rutshuni 河 (愛德華湖)(剛果).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 15.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 27292)
背棘 (总数) : 0; 背的软条 (总数) : 7; 臀棘: 0; 臀鳍软条: 8 - 11; 脊椎骨: 31 - 33. Diagnosis: Amphilius jacksonii is diagnosed from all other species of the Amphilius jacksonii complex by its more slender caudal peduncle, 4.8-7.9% of standard length vs. 8.1-12.3% (Ref. 103388). It is further distinguished from A. pedunculus, A. frieli, and A. crassus by its longer caudal peduncle, caudal-peduncle length 16.7-20.6% of standard length vs. 13.3-18.8%; and from A. frieli, A. crassus, and A. lujani by its more slender body, body depth at anus 9.6-13.2% of standard length vs. 13.5-17.4% (Ref. 103388). It is further distinguished from A. frieli by having fewer total gill rakers on the first gill arch, 6-9, rarely 10 vs. 10-11, rarely 9 or 12; and from A. ruziziensis by having a wider interorbital width, 26.7-32.0% of head length vs. 23.4-25.1% (Ref. 103388). It differs from other east and southern African species of Amphilius, including the wide ranging A. uranoscopus, in having fewer total vertebrae, a mode of 6+7 principal caudal rays, and a crenulated epidermal fold at the base of the caudal fin; the latter character is shared with A. platychir and at least some other west African Amphilius species (Ref. 51677). Amphilius jacksonii is further characterized by the following combination of characters (but not all unique): dorsal and pectoral spines absent; dorsal fin with 7 soft rays; short adipose fin not adnate with caudal fin; pectoral fin with 8-10 soft rays; anal-fin rays 7-10; forked caudal fin with rounded lobes; 31-33 free vertebrae; and variable, heavily mottled pigmentation (Ref. 51677). It is distinguished from other congeners in the Congo [=Zaire] River, except A. angustifrons and A. notatus, by having fewer total free vertebrae, 31-33 vs. 33-40; from A. angustifrons and A. notatus it is distinguished by fewer pectoral rays, 8-11, mode of 10, vs. 8-9, mode of 9; anal-fin rays, mode of 10 vs. 9; and mensural characters (Ref. 51677).
与 Amphilius 其他的东方与非洲南部种区分了, 包括那广泛分布 A. uranoscopus,有较少的总数脊椎骨, 一个 6+ 的模态在尾鳍基底的 7个主要尾鳍鳍条 , 与细齿状的表皮性的折层; 后者特征一起分享 A. platychir 而在最少一些其他的西方非洲种。 在组合特征之后不同进一步藉由;(但是不是所有独特的) 背部的与胸棘不存在; 背鳍有 7个软鳍条; 不对尾鳍感到合生的短脂鳍; 胸鳍有 8-10个软鳍条; 臀鳍棘条 7-10; 叉型尾有圓的葉; 31-33個分離的脊椎骨; 而且可變又很重有斑點的顏色。 與在剛果的其他同類區分了 [=薩伊] 河, 除 A. angustifrons 與 A. notatus, 藉著具有較少的總數分離的脊椎骨;(31-33 vs.33-40) 有別於較少的胸鰭鰭條 (8-11, 模態 10, vs.8-9, 模態 9) ，臀鰭棘條 (模態 10 vs.9) 與關於度量的特徵這兩個種。 (參考文獻 51677)
Rheophilic species; occurs in rivers and streams with moderate current and gradient (Ref. 51677). Mostly associated with upper drainages of rivers; in clear and well-oxygenated water (Ref. 27292). Generally associated with large rocks or mixed cobble and rock substrates (Ref. 51677). Carnivorous, feeds predominantly on benthic aquatic insects (Ref. 51677); insect larvae, worms and other invertebrates are taken (Ref. 27292). Iteroparous, with asynchronous ovarian development (Ref. 51677).
出现于流动, 溶氧量高的水域。 (参考文献 7248) 主要捕食底栖的水生昆虫。 (参考文献 51677) 反复生殖的, 藉由异步的卵巢发展.(参考文献 51677)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Iteroparous, with asynchronous ovarian development (Ref. 51677).非洲: Hima 河， Aduka 與 Agoye 河 (烏干達) ， Rutshuni 河 (愛德華湖)(剛果).
Seegers, L., 1996. The fishes of the Lake Rukwa drainage. Ann. Mus. R. Afr. Centr., Sci. Zool., 278:1-407. (Ref. 27292)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00173 - 0.01152), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.0 ±0.33 se; based on food items.
Generation time: 5.8 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (tmax<2; K=0.19-0.39).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (29 of 100).
