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Marcusenius caudisquamatus Maake, Gon & Swartz, 2014

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drawing shows typical species in Mormyridae.

South Africa country information

Common names: [No common name]
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Type locality of the holotype of Marcusenius caudisquamatus: 'Mhlatuze River, under the bridge on road R102, 28°50'44.2"S, 31°51'59.6" E, South Africa' (Ref. 95448). Known from Mhlatuze River (Ref. 95448, 113652) and Nseleni River (Ref. 95448).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Maake, P.A., O. Gon and E.R. Swartz, 2014
National Database:

Common names from other countries

... more

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

Teleostei > Osteoglossiformes (Bony tongues) 骨舌魚目 (Bony tongues) > Mormyridae (Elephantfishes) 象鼻魚科 (Elephantfishes)
Etymology: Marcusenius: Becasue of J. Marcusen, author of "Zur Phauna des Schwarzen Meeres", 1867; ichthyologist;  caudisquamatus: A combination of the Latin words cauda, for tail, and squama, for scale; this name refers to the high number of circumpeduncular scales in this species relative to the other members of the genus in South Africa (Ref. 95448).

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

; 淡水 底中水層性.    25°C - 26°C (Ref. 95448); 28°S - 29°S

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

Africa: known only from Nseleni and Mhlatuze rivers in South Africa (Ref. 95448).

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 25.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 95448)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 0; 背的軟條 (總數): 20-22; 臀棘 0; 臀鰭軟條: 27 - 28; 脊椎骨: 44. Diagnosis: Marcusenius caudisquamatus can be distinguished from its congeners by the following characters: middle body depth 23.8-25.9% of standard length; dorsal fin length 15.4-19.2% of standard length; anal fin length 23.0-24.9% of standard length; pre-dorsal length 61.7-66.7% of standard length; pre-anal length 60.7-62.8% of standard length; caudal peduncle depth 40.4-51.7% of its length; dorsal fin rays 20-22; anal fin rays 27-28; scales around caudal peduncle 19; lateral line scales 72-73; anterior gill rakers (4)+(5-6), total anterior gill rakers 9-10; posterior gill rakers (6)+(9), total posterior gill rakers 15; conical teeth on upper/lower jaws 5-5 (Ref. 95448).

生物學特性     字彙 (例如 epibenthic)

Water current was moderate to fast in sections of the rivers where Marcusenius caudisquamatus was collected (Ref. 95448).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚


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

Maake, P.A., O. Gon and E.R. Swartz, 2014. Descriptions of three new species of Marcusenius Gill, 1862 (Teleostei: Mormyridae) from South Africa and Mozambique. Zootaxa 3780(3):455-480. (Ref. 95448)

IUCN 瀕危狀態 (Ref. 130435)

  瀕危 (EN) (B1ab(iii)+2ab(iii)); Date assessed: 06 December 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00251 - 0.01261), b=3.05 (2.85 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
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 (21 of 100).