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Anguilliformes (Eels and morays) >
Derichthyidae (Longneck eels)
Etymology: Nessorhamphus: Greek, nessa, netta = duck + Greek, rhamphos = bill, peak (Ref. 45335).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien bathypelagisch; diepte 0 - 1800 m (Ref. 58018). Deep-water
Eastern Atlantic: France to Morocco; off the Cape, South Africa (Ref. 6592). Also known from temperate and subtropical latitudes of the western Atlantic, southwestern Indian, and southwest Pacific.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 60.0 cm TL mannelijk / geslacht onbekend; (Ref. 123983)
Dorsale stekels (totaal) : 0; Anale stekels: 0. Dark brown in color (Ref. 6592). Snout long, depressed, and spatulate in form; lateral line distinct; pectoral fin long, subequal to snout; dorsal and anal fin rays abruptly become shorter near tip of tail and once again become longer, so it appears an independent caudal fin is present (Ref. 13608).
Body shape (shape guide): eel-like.
Mesopelagic (Ref. 5951). Feeds mainly on crustaceans.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Smith, D.G., 1990. Derichthyidae. p. 193-194. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 5228)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.8750 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.5 ±0.50 se; based on food items. |
Weerstandsvermogen (Ref. 120179) |
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Assuming tmax>10). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Moderate to high vulnerability (47 of 100). 🛈 |
Voedingsstoffen (Ref. 124155) |
Calcium = 26.4 [9.0, 58.4] mg/100g; Iron = 0.303 [0.134, 0.816] mg/100g; Protein = 18 [16, 21] %; Omega3 = 0.176 [0.058, 0.544] g/100g; Selenium = 22.3 [7.8, 62.8] μg/100g; VitaminA = 19.8 [2.3, 158.1] μg/100g; Zinc = 0.516 [0.280, 1.006] mg/100g (wet weight); |