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Nothobranchius wattersi Ng'oma, Valdesalici, Reichwald & Cellerino, 2013

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Malawi 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 Nothobranchius wattersi: 'Salima District, Malawi, temporary roadside pools 9-11 km ENE of Salima on road S29' (Ref. 92979). Known from ephemeral pools, swamps and ditches on the floodplains of rivers associated with central and southern sections of Lake Malawi (Ref. 92979), areas around Lake Malombe (Ref. 92979), and the upper Shire region (Ref. 92979).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mi.html
National Fisheries Authority: http://isp.msu.edu/AfricanStudies/Plea/mfri.htm
Occurrences: Occurrences Point map
Main Ref: Ng'oma, E., S. Valdesalici, K. Reichwald and A. Cellerino, 2013
National Database:

Common names from other countries

... more

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335);  wattersi: The species is named in dedication to B.R. Watters, who has studied Malawi Nothobranchius and their biotopes extensively, and has also made significant contributions to the further understanding of the ecology of Nothobranchius fishes (Ref. 92979).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 大洋性.   

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Africa: ephemeral pools, swamps and ditches on the floodplains of rivers associated with central and southern sections of Lake Malawi, and areas around Lake Malombe and the upper Shire River region (Ref. 92979).

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 5.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 92979); 4.8 cm SL (female)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 背的软条 (总数): 16-17; 臀棘 0; 臀鳍软条: 17 - 18; 脊椎骨: 27 - 28. Diagnosis: Nothobranchius wattersi males are similar to N. kirki and differing from all other species of the genus by the following combination of characters: red colouration on caudal fin and part of caudal peduncle, anal fin red with a blue-green proximal portion, dorsal fin with light blue margin; pectoral, caudal and anal fins with black margin (Ref. 92979). It is readily distinguished from N. kirki by light blue colouration in scale centres, plain deep red colouration on caudal and distal portion of anal fin, vermiculated blue pattern on anal fin, dorsal fin blue-green, anal fin more rounded, dorsal-fin base shorter, prepelvic to preanal distance longer and head longer, with a more flattened to slightly concave shape on the upper head surface relative to N. kirki.

生物学特性     字汇 (例如 epibenthic)

Nothobranchius wattersi occupies seasonal water pools that are briefly connected owing to seasonal flooding by summer rains and isolated later in the season before eventually desiccating; these pools are characterized by fine black or grey-coloured clay-rich soils typically comprising silt, mud and fine sand, roughly in that order of abundance, and eggs are laid in the uppermost layers of this substratum (Ref. 92979).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Ng'oma, E., S. Valdesalici, K. Reichwald and A. Cellerino, 2013. Genetic and morphological studies of Nothobranchius (Cyprinodontiformes) from Malawi with description of Nothobranchius wattersi sp. nov. J. Fish Biol. 82(1):165-188. (Ref. 92979)

世界自然保护联盟红皮书 (Ref. 130435)

  临近濒危 (NT) (B1b(iii)+2b(iii)); Date assessed: 21 August 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 




人类利用

渔业:
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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=0.01096 (0.00449 - 0.02680), b=2.92 (2.71 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).