分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); nikiforovi: The specific name is given in honour of Andrei Nikiforov, from Russia, who participated in several field surveys aimed at research on Nothobranchius fishes in Tanzania, and he is co-discoverer of this new species and co-collector of the type specimens; a noun in genitive (Ref. 123990).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 外洋の. Tropical
Africa: temporary pools in the floodplain of the lower reaches of the seasonal Matandu River drainage in Tanzania (Ref. 123990).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 3.0 cm SL オス/雌雄の選別がない; (Ref. 123990)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 13 - 16; 肛門の骨: 0; 臀鰭: 13 - 16. Diagnosis: Nothobranchius nikiforovi is distinguished from all other congeners, except N. eggersi, by males presenting two phenotypes; the blue phenotype having a bright iridescent light blue to blue-green body, with narrow red-brown scale margins creating irregular reticulated pattern forming chevron-shaped crossbars on posteroventral portion of body and median fins light blue with red-brown dotted pattern; the red phenotype has a dark red head, light blue dorsal and anal fins proximally and medially, dark red distally, with dark red stripes parallel to the fin rays, and plain dark red caudal fin (Ref. 123990). It differs from N. eggersi by male colour pattern: the blue phenotypes having median fins with dark grey distal portion, some of the rays of dorsal and anal fins with white tips only, vs. median fins light blue with distinct slender white distal band; the caudal fin lacking a spotted pattern, vs. dots arranged into irregular curved stripes; the red phenotype has a golden stripe between the nape and dorsal-fin origin, vs. light blue stripe; the dorsal and anal fin distal portion plain red and without light distal band, vs. with distinct narrow white distal band; the pelvic fin without distal band, vs. with distinct slender light blue to white distal band; furthermore, it differs from N. eggersi by the morphometric characters of having greater postorbital length of 49-55% of head length, vs. 42-48%, and greater head width of 64-71% of its depth, vs. 56-62% (Ref. 123990).
The species meets criteria B1ab(iii) for Vulnerable as conservation status; the increasing pressure on land and water resources of wetlands will continue to result in habitat degradation and represent an important threat to the species, raising vulnerability in terms of conservation status (Ref? 123990).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Nagy, B., B.R. Watters and A.A. Raspopova, 2021. Nothobranchius nikiforovi, a new species of seasonal killifish from the lower Matandu drainage in south-eastern coastal Tanzania (Cyprinodontiformes: Nothobranchiidae). Zootaxa 4950(1):103-122. (Ref. 123990)
IUCNのレッドリストの状況は (Ref. 130435)
攻撃されやすい (VU) (B1ab(iii)+2ab(iii)); Date assessed: 01 March 2022
Human uses
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [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).
栄養段階 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
