分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); sagittae: The species name sagittae comes from the Latin sagittae meaning arrow; in reference to the relatively pointed head and slender shape (Ref. 98818).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性.
Africa: seasonal pools and swamps in Ruwana, Grumeti and Mbalageti river systems, Lake Victoria basin in Tanzania (Ref. 98818).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.9 cm SL 雄魚/尚未辨別雌雄; (Ref. 98818)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 15 - 17; 臀棘: 0; 臀鰭軟條: 15 - 18. Diagnosis: Nothobranchius sagittae is distinguished from all other members of the Nothobranchius neumanni species group by the following combination of characters: in the male, a relatively elongate body shape, a dorsal profile that is slightly convex, a concave transition between the head and body, a pointed snout, and an upward-directed mouth cleft; the anal fin in the male is red with one or two pale yellow, white or blue-white horizontal bands, a light blue-gray proximal part, and a distinct dark red margin; the caudal fin in the male is usually completely red with a relatively dark marginal band (Ref. 98818).
Occurs in shallow, seasonal pools and swamps (Ref. 98818).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Wildekamp, R.H., B.R. Watters and K.M. Shidlovskiy, 2014. Review of the Nothobranchius neumanni species group with descriptions of three new species from Tanzania (Cyprinodontiformes: Nothobranchiidae). J. Am. Killifish Ass. 47(1):2-30. (Ref. 98818)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
瀕危 (EN) (B1ab(iii)+2ab(iii)); Date assessed: 12 January 2019
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
