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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); rungwaensis: The specific name is in reference to the Rungwa River, in which drainage system this species is found; an adjective derived from the geographical name (Ref. 122068).

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

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: Rungwa River in Tanzania (Ref. 122068).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.2 cm SL male/unsexed; (Ref. 122068); 3.7 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 15; Anal spines: 0; Anal soft rays: 14. Diagnosis: Nothobranchius rungwaensis 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 scale margins; anal fin yellow with a narrow red-brown submedial band, a broad yellow medial band with red to red-brown spots, and a broad black distal band; caudal fin light grey with slender semi-translucent dark grey distal band; pelvic fins light blue-grey, with broad yellow medial band with red-brown spots, and narrow black distal band (Ref. 122068). Furthermore, it differs from the other members of the Nothobranchius taeniopygus species group in central and western Tanzania by a head width 54% of head length vs. 56-73%, and 62% of its depth vs. 63-77%; interorbital width 38% of head length vs. 39-52%; postorbital length 46% of head length vs. 47-63%; snout length 22% of head length vs. 16-22%; and caudal peduncle length 119% of its depth vs. 121-169% (Ref. 122068).

Found in seasonal pools (Ref. 122068).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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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)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Vulnerable (VU) (B1ab(iii)+2ab(iii)); Date assessed: 02 September 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Length-weight rel.
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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).

Nothobranchius rungwaensis Watters, Nagy & Bellstedt, 2019