Классификация / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); sonjae: The specific name is named in honour of Sonja Hengstler, co-collector of the type specimens of this species; she is an active participant and plays an essential role in Nothobranchius collecting trips in Africa together with her husband, the renowned killifish enthusiast, Holger Hengstler; a noun in genitive (Ref. 122068).
Eponymy: Sonja Hengstler, who helped collect the holotype, is the wife of “renowned killifish enthusiast” Holger Hengstler. (See also Hengstler) (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический. Tropical
Africa: seasonal pools and marshes associated with Malagarasi River drainage and Moame River in west-central Tanzania (Ref. 122068).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 4.4 cm SL самец/пол неопределен; (Ref. 122068); 1.9 cm SL (female)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 15 - 18; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 18 - 19. Diagnosis: Nothobranchius sonjae is distinguished from all other species of the genus by the following characters in males: body colouration light blue to blue-green with red-brown, brown or grey scale margins and a golden-brown to grey stripe on the dorsal scale row between nape and dorsal-fin origin; anal fin light blue-grey to yellow-grey with irregular red to red-brown spots proximally, followed by a narrow brown submedial band, a slender yellow medial band and a broad black distal band; caudal fin yellow-brown, grey-brown, blue-grey or grey, with red-brown, brown, dark grey or red spots; some populations with radiating red stripes, the density of which varies from moderate to highly dense such that in the latter cases the basal, proximal and medial zones may appear dominantly a deep red; distal zone comprises a slender to broad semi-translucent dark grey to black distal band; pelvic fin light blue-grey to yellow-grey, with broad yellow medial band and narrow black and blue distal margin (Ref. 122068). Furthermore, it differs from the other members of the Nothobranchius taeniopygus group in central and western Tanzania by a head length of 25.8-27.0% of standard length vs. 27.3-34.6%; and caudal peduncle length 153-159% of its depth vs. 119-149% and 160-169%, respectively (Ref. 122068).
Found in seasonal pools and marshes (Ref. 122068).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Watters, B.R., B. Nagy, P.D.W. van der Merwe, F.P.D. Cotteril and D.U. Bellstedt, 2019. Review of the Nothobranchius taeniopygus species group from central and western Tanzania with descriptions of five new species and redescription of Nothobranchius taeniopygus (Teleostei: Nothobranchiidae). Ichthyol. Explor. Freshwat. 29(3):239-278. (Ref. 122068)
Статус Красного Списка МСОП (Ref. 130435: Version 2024-1)
Угроза для людей
Harmless
Использование человеком
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Специальные отчеты
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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=0.01000 (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).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
