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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Nanochromis: Latin, nannus = small + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on authors: Roberts & Stewart.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser demersal. Tropical; 20°N - 15°N
Africa: lower Congo River rapids near Inga, in Democratic Republic of the Congo (Ref. 42510). Possibly also in the Cuvette Centrale (Ref. 52307).
Größe / Gewicht / Alter
Geschlechtsreife: Lm ? range ? - ? cm
Max length : 5.2 cm SL Männchen/unbestimmt; (Ref. 5666)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Diagnosis: broad black band on outer edge of anal fin (especially in the much-smaller females); anterior dorsal fin rays extremely short, sometimes barely visible, more elongated in posterior portion; caudal fin in males somewhat lanceolate, although upper parts may possess elongated rays, giving it a lobe-like appearance; caudal fin more rounded in females; dorsal, anal and pelvic fin rays can be extremely elongated in males (Ref. 52307).
Coloration: body bluish-gray, sometimes turquoise in the most anterior parts; snout, throat and breast slightly orange in some specimens; males with dark margins on body scales and well-developed rows of maculae on dorsal, anal and most of the caudal fin (save for the thin white margin on the upper edge); ripe females with red to violet belly that becomes extremely swollen immediately prior to spawning; large, white genital papilla always visible (Ref. 52307).
Cave-spawner (Ref. 52307).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Daget, J., 1991. Nanochromis. p. 270-273. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5666)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
Download XML
Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (10 of 100).
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