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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Aphyosemion: Greek, aphye, -es, sardine, anchovy + Greek, semeion = mark, signal (Ref. 45335).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce pelágico. Tropical
Africa: Leyou River, in the southern Massif du Chaillu, Louessé River basin, in Republic of the Congo (Ref. 125647).
Tamaño / Peso / Edad
Madurez: Lm ? range ? - ? cm
Max length : 2.8 cm SL macho / no sexado; (Ref. 125647)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 11 - 12; Espinas anales: 0; Radios blandos anales: 14 - 15. Diagnosis: Aphyosemion cyanoflavum is a member of the Aphyosemion ogoense group based on DNA analysis (Ref. 125647). It can be distinguished from all other Aphyosemion species by its cephalic lateral line system, having unique large, dark coloured anterior supra-orbital neuromasts in very wide supra-orbital grooves, 18.3-19.4% of inter-orbital width vs. 7.3-16.9% in other species; very large pre- and postorbital canals with large pores and frontal neuromasts housed in one pit with one anterior lobe; by its wide upper jaw, due to enlarged lacrimal bones, wider than inter-orbital distance versus narrower in all other species, making the dorsal and lateral view of the head much more remniscent of an Epiplatys than an Aphyosemion (Ref. 125647). Males are distinguished from all other Aphyosemion species by their unique lateral colour pattern: anterior part of body on side yellow and posterior side of body purple-grey; the transition between yellow and purple-grey is very sharp and situated just behind the pelvic fin (Ref. 125647). Males are distinguished from all other members of the A. ogoense group, except for A. caudofasciatum, A. pyrophore, and A. thysi, by the presence of narrow dark red bars in the posterior part of the flanks and on the caudal peduncle; males are distinguished from the latter three species by the above mentioned wide supra-orbital grooves and the unique colour pattern of anterior yellow and posterior purple grey on the flanks (Ref. 125647).
Cross section: oval.
Known from the type locality where it is found syntopic with Aphyosemion coeleste and A. mandoroense, where they occur in more or less similar microhabitats (Ref. 125647).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
van der Zee, J.R., G. Walsh, V.N. Boukaka Mikembi, M.N. Jonker, M.P. Alexandre and R. Sonnenberg, 2018. Three new endemic Aphyosemion species (Cyprinodontiformes: Nothobranchiidae) from the Massif du Chaillu in the upper Louessé River system, Republic of the Congo. Zootaxa 4369(1):63-92. (Ref. 125647)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00250 - 0.01453), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (10 of 100).
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