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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); streltsovi: The species is named in honour of Sergey Streltsov, who collected the type specimens (Ref. 116792).
Eponymy: Dr Sergey Streltsov (Russia), was a killifish aquarist. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический. Tropical
Africa: Nkululu River and Limba Limba River, Malagarasi River basin, in Tanzania (Ref. 116792, 123150).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 5.1 cm SL самец/пол неопределен; (Ref. 116792)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 16 - 18; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 16 - 18; позвонки: 32. Diagnosis: Nothobranchius streltsovi males are similar to other members of the N. ugandensis species group in possessing light blue scales with a broad, irregular, reticulated pattern on the body, oblique red or orange bars on the head and dorsum, yellow or blue anal fin, large vivid red spots on the dorsal and anal fins, rounded head with slightly concave to nearly straight dorsal profile, convex predorsal profile from nape to posterior extremity of dorsal-fin base, and variable cephalic squamation; males can be distinguished from all other species of this species group by the following combination of characters: scale margins orange; caudal fin orange, spotted proximally; pectoral fin spotted proximally; anal and pelvic fins with a pattern of red dots, light blue proximally, yellow or creamy white distally; seven branchiostegal rays; 31-34 longitudinal scales; 14-16 transverse scales; 15-16 circumpeduncular scales; supraorbital neuromast formula 2+3+4 (Ref. 116792).
Found in an ephemeral pool located near a culvert measuring approximately 6 m x 6 m, less than 50 cm deep, and without aquatic vegetation; the water was light clay grey and slightly turbid with low conductivity, pH 7.9 and temperature approximately 26°C (Ref. 116792).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Valdesalici, S., 2016. Nothobranchius streltsovi, a new species of annual killifish with two male colour morphs from the Malagarasi drainage, central Tanzania (Teleostei: Cyprinodontiformes: Nothobranchiidae). Ichthyol. Explor. Freshwat. 27(2):153-161. (Ref. 116792)
Статус Красного Списка МСОП (Ref. 130435: Version 2024-2)
Угроза для людей
Harmless
Использование человеком
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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).
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).
