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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius:Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); iridescens:Name 'iridescens' from the Latin participial adjective deriving from the ancient Greek word 'iris', meaning 'rainbow', in reference to the colourful appearance of the males, containing different colours of the rainbow.
Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie
Rayons mous dorsaux (Total) : 16 - 17; Rayons mous anaux: 17 - 18. This species is distinguished from its congeners by the following set of characters: anal fin with irregular red-brown spots and stripes, creating two irregular submedial and medial bands and with broad yellow subdistal band; caudal fin with a slender light blue subdistal band, densely marked with irregular red spots, and narrow dark brown distinct distal margin; caudal peduncle length 153-161 in % of its depth; eye diameter 31-34% HL; and predorsal length 52.4-55.6% SL (Ref. 138275). Body shape (shape guide): fusiform / normal; Cross section: oval.
This species inhabits a turbid pool, about 50 cm in depth, with margins partially overgrown by grass (Ref. 138275).
Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Dynamique des populations Paramètres de croissance Âges / tailles maximales Longueur-poids rel. Rel. longueur-longueur. Fréquences de longueurs Conversion de masse Recrutement Abondance
Cycle de vie Reproduction Maturité Maturité/épines rel. Fécondité Frai Agrégats de frai Œufs Développement de l'œuf Larves Dynamique des populations larvaires
Distribution Territoires Zones FAO Écosystèmes Occurrences Introductions BRUVS - Vidéos
Anatomie Surface branchiale Cerveau Otolithe
Physiologie Composition corporelle Nutriments Consommation d'oxygène Type de natation Vitesse de nage Pigments visuels Son de poisson Maladies et parasites Toxicité (CL50)
Indice de diversité phylogénétique (Réf. 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).
Niveau trophique (Réf. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Vulnérabilité de la pêche (Ref. 59153): Low vulnerability (10 of 100). 🛈
