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Xenophallus umbratilis (Meek, 1912)

Shadow toothcarp
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Xenophallus umbratilis
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Nicaragua country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Lake Nicaragua on the Atlantic versant to the Río Parismina and was collected once in Río Tenorio drainage on the Pacfiic slope. Collected from Lake Nicaragua by a net trawled at 10-12 m depth, several kilometers from the shore (Ref. 36880).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nu.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bussing, W.A., 1998
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Cyprinodontiformes (Rivulines, killifishes and live bearers) 鱂形目 (Rivulines, killifishes and live bearers) > Poeciliidae (Poeciliids) 花鱂科 (Poeciliids) > Poeciliinae
Etymology: Xenophallus: Greek, xenos = strange + Latin, phallus = penis (Ref. 45335).
  More on author: Meek.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 大洋性; pH range: ? - 7.2; dH range: ? - 3; 深度上下限 10 - 20 m (Ref. 36880).   熱帶; 21°C - 37°C (Ref. 36880)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Central America: Lake Nicaragua on the Atlantic drainage to the Río Parismina and the Río Tenorio drainage on the Pacific slope (Ref. 36880). Costa Rica and Nicaragua.
中美洲: 在太平洋斜坡上的在大西洋的流域到 Rio Parismina 與 Rio Tenorio 流域上的湖尼加拉瓜.(參考文獻 36880) 哥斯大黎加與尼加拉瓜。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 36880)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

Body thin, translucent and yellowish. Base of the first dorsal rays with a black blotch; in males the posterior edge of the dorsal fin is also black and sometimes the remainder of the fin is brilliant yellow. The males and young have 5 to 10 black bars on the side which are diffuse or absent in females. The gonopodium is asymmetrical and either dextral or sinistral; the apex of which in mature males bears a long upper projection and swelling below, both of which are membranous (Ref. 36880).
身體細的﹐半透明的與淡黃色的。 第一背鰭鰭條的基底具有一個黑色的斑塊; 在背鰭的雄性後緣中也是黑色的與有時那其餘的鰭是鮮黃色。 雄性與幼魚側邊上有 5 到 10條黑色的橫帶那是擴散或者不存在於雌性。 生殖足是不對稱的與或右邊或左的; 那一個在成熟的雄性中有一個長的上面突出的尖頂與隆起的在下面, 那是都有膜狀的.(參考文獻 36880)

生物學特性     字彙 (例如 epibenthic)

Inhabits waters of all velocities, between 35 and 590 m elevation, with temperatures of 21 to 37°C. Lives in small groups in brooks, creeks and along the shorelines of rivers where it feeds on detritus, filamentous algae, aquatic insects and ooze. Probably reproduces throughout the year (Ref. 36880).

用 21 到 37個 ° C. 的溫度棲息於在 35 與 590 公尺海拔之間的所有速度的水域 生活在小溪中的小群魚群, 小溪而且沿著河的海岸線在那裡它吃碎屑,菌絲藻,水生昆蟲與軟泥。 可能繁殖全年度。 (參考文獻 36880)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

After 28 days gestation, about 15 to 50 young are born. Sexual maturity is reached after 3-4 months (Ref. 2060).中美洲: 在太平洋斜坡上的在大西洋的流域到 Rio Parismina 與 Rio Tenorio 流域上的湖尼加拉瓜.(參考文獻 36880) 哥斯大黎加與尼加拉瓜。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Lucinda, P.H.F., 2003. Poeciliidae (Livebearers). p. 555-581. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brazil. (Ref. 50894)

IUCN 瀕危狀態 (Ref. 130435)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (B1ab(iii)); Date assessed: 12 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00354 - 0.01865), b=3.16 (2.97 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  2.4   ±0.21 se; based on food items.
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).