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Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Doumeinae
Etymology: Phractura: Greek, phraktos = fence (Ref. 45335).
Eponymy: Claus Herluf Stenholt Clausen (1921–2002) was a California-born Danish ichthyologist and biologist. He collected in Liberia (1965). He wrote: Tropical Old World Cyprinodonts (1967). He collected the holotype. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bottenlevande. Tropical; 23°C - 27°C (Ref. 12468); 13°N - 6°N
Africa: Benue, lower Niger and Niger delta (Nigeria and Cameroon) to the (upper) Comoe (Burkina Faso); also reported from other coastal rivers such as the Ibu and Ogun (Nigeria) and Mono (Togo), as well as from the Volta basin (Ref. 57128).
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.8 cm SL hane/ej könsbestämd; (Ref. 57128)
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 7; Taggstrålar i analfenan: 2; Mjukstrålar i analfenan: 7 - 9. Diagnosis: pectoral-fin tips not reaching to pelvic-fin bases; pelvic-fin insertions placed behind a vertical line from last dorsal-fin ray; snout long, its length over 55% of head length; posterior nostrils separated from orbits by a distance about equal to orbit width and not separated by bony crest; humeral process pointed; branchiostegal membrane with a shallow ventral invagination; width of occipital process comprised from 3.5-6 times in its length (Ref. 57128).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Skelton, P.H., L.M. Risch and D. Paugy, 2003. Amphiliidae. p. 117-143 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57128)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [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).
Trofisk nivå (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
