Common names from other countries
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Osteoglossiformes (Bony tongues) >
Notopteridae (Featherbacks or knifefishes) > Xenomystinae
Etymology: Papyrocranus: Greek, papyros = paper rush + Greek, kranion = skull (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce demersale; pH range: 6.5 - ? ; dH range: 10 - ?. Tropical; 24°C - 30°C (Ref. 2059)
Africa: Niger basin (upper Niger, Benue and Niger Delta), most coastal river basins from Senegal and Gambia eastward to include the Tano and Prah basins in Ghana, and the Cross and Sanaga basins east of the Niger delta (Ref. 7431). Absent from the Volta basin, Chad, Ogooué, Kwilu-Niari or Chiloango basins (Ref. 7431).
Size / Peso / Age
Maturità: Lm ?  range ? - ? cm
Max length : 80.0 cm TL maschio/sesso non determinato; (Ref. 7431); peso massimo pubblicato: 1.3 kg (Ref. 3516)
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 2; Spine anali: 0; Raggi anali molli: 113 - 141. With 35-45 ventral spines; head 5.0-5.1 times SL; eye diameter 4.6-5.3 times head length; length of nasal tentacle twice the eye diameter. Caudal vertebrae 63-69 (Ref. 7431).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Obligate air-breathing (Ref. 126274); Prefers calm waters with dense vegetation.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Roberts, T.R., 1992. Systematic revision of the old world freshwater fish family Notopteridae. Ichthyol. Explor. Freshwat. 2(4):361-383. (Ref. 7431)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesca: pesca di sussistenza; Acquario: Commerciale
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.7510 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00304 - 0.02174), b=2.99 (2.77 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.2 ±0.45 se; based on food items.
Generation time: 3.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.29).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (38 of 100).
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Nutrients (Ref.
124155): Calcium = 99.6 [54.9, 243.6] mg/100g; Iron = 1.46 [0.71, 2.93] mg/100g; Protein = 17.7 [15.9, 19.5] %; Omega3 = 0.472 [0.192, 1.213] g/100g; Selenium = 90 [31, 211] μg/100g; VitaminA = 22.8 [7.2, 69.1] μg/100g; Zinc = 1.28 [0.84, 2.02] mg/100g (wet weight);