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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); marmoreus:Name 'marmoreus' from the Latin adjective deriving from the ancient Greek word 'marmaros', meaning 'resembling marble' or 'marblelike', in reference to the irregularly mottled marbled colour pattern on the body of the males of the new species.
Environment: milieu / climate zone / depth range / distribution range Ecology
Maturity: Lm? range ? - ? cm Max length : 4.1 cm SL male/unsexed; (Ref. 138275)
Short description Identification keys | Morphology | Morphometrics
Dorsalsoft rays (total): 15 - 17; Analsoft rays: 16 - 19. This species is distinguished from its congeners by the following set of characters: body with irregular red-brown patches and stripes, forming a marble-like mottled pattern in male; anal and caudal fins with slender yellow to amber subdistal band and broad dark brown distal band; head depth 80-84% HL; caudal peduncle length 152-159 in % of its depth; head length 25.5-30.9% SL; caudal peduncle length 152-159 in % of its depth; prepelvic length 45.5-46.7% SL; and head width 65.5-72.9 in % of its depth (Ref. 138275). Body shape (shape guide): fusiform / normal; Cross section: oval.
This species inhabits a turbid pool, 25-30 m in diameter and about 1.5 m deep, with margins overgrown by grass (Ref. 138275).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nagy, B., 2025. Review of Cyprinodontiform fishes in the Upper Congo drainage with descriptions of four new species of seasonal Nothobranchius (Nothobranchiidae) and a new species of 'Lacustricola' Lampeye (Procatopodidae) in South-Eastern DR Congo. Ecology and Diversity 2:10006. (Ref. 138275)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00461 - 0.02608), b=2.94 (2.74 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-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). 🛈
