Zambia country information

Common names: [No common name]
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
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Uses: live export: yes;
Comments: Type locality of the holotype of Nothobranchius sainthousei: 'Zambia: Luapula Province: Luapula drainage; seasonal pools formed in small riverbed on floodplain of small seasonal Chimbembe River, about 5 km southwest from influx of Luongo into Luapula, near Mweshi village (10°43.51'S 28°38.22'E)' (Ref. 116789). Known from ephemeral pools in riverbed of Chimbembe River, (middle) Luapula River drainage (Ref. 116789, 117281).
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Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/za.html
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Occurrences: Occurrences Point map
Main Ref: Nagy, B., F.P.D. Cotterill and D.U. Bellestedt, 2016
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Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); sainthousei: The specific name honours Ian Sainthouse, renowned breeder and collector of killifish, for his special longstanding dedication to researches on the genus Nothobranchius; a noun in genitive (Ref. 116789).

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser benthopelagisch. Tropical

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Africa: ephemeral pools in riverbed of Chimbembe River, Luapula River drainage, in Zambia (Ref. 116789).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 4.1 cm SL Männchen/unbestimmt; (Ref. 116789); 3.0 cm SL (female)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 0; Rückenflossenweichstrahlen (insgesamt): 15-19; Afterflossenstacheln 0; Afterflossenweichstrahlen: 15 - 19; Wirbelzahl: 29. Diagnosis: Nothobranchius sainthousei is distinguished from the other Nothobranchius species from the drainages of the Upper Congo in northern Zambia and Katanga province of DRC, except N. rosenstocki, by having broad orange-brown posterior scale margins on the trunk, vs. red, and an anal fin with orange-brown margin, vs. light blue or yellow or red-brown or black (Ref. 116789). It is distinguished from N. rosenstocki by having dorsal and anal fins with orange-brown spots, vs. irregular orange-brown bars; furthermore, N. sainthousei is distinguished from all members of the N. brieni group by head length, 25.1-29.3% of standard length vs. 29.6-38.7%, and head width, 71-79% of head length vs. 52-62% (Ref. 116789).

Found in ephemeral habitats in the floodplain between the small seasonal Chimbembe and Kusake rivers; about 5 km southwest of the confluence of the Luapula with the Luongo (Ref. 116789). The ephemeral pools were about 5-10 m wide, and less than 1 m deep at the deepest point; the aquatic habitat was heavily overgrown with grass (Ref. 116789). The water of pH 6.98 contained 15 ppm of total dissolved solids; it was brown and turbid, so the pool substratum was only visible at shallower depths; the water temperature measured at midday was 23.0°C (Ref. 116789). The conservation status of Nothobranchius sainthousei is uncertain, but appears to qualify as vulnerable (Ref. 116789). Stomach contents of adult wild-caught specimens show that N. sainthousei is a micropredator, feeding on small aquatic crustaceans, worms, insect larvae and other zooplankton (Ref. 116789).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Nagy, B., F.P.D. Cotterill and D.U. Bellestedt, 2016. Nothobranchius sainthousei, a new species of annual killifish from the Luapula River drainage in northern Zambia (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 27(3):233-254. (Ref. 116789)

IUCN Rote Liste Status (Ref. 130435)

stark gefährdet (EN) (B1ab(iii)+2ab(iii)); Date assessed: 12 January 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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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=0.01000 (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).

Nothobranchius sainthousei Nagy, Cotterill & Bellstedt, 2016