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Notacanthiformes (Halosaurs and deep-sea spiny eels) >
Notacanthidae (Deep-sea spiny eels)
Etymology: Polyacanthonotus: Greek, poly = a lot of + Greek, akantha = thorn + Greek,noton = back (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batipelagico; distribuzione batimetrica 700 - 3000 m (Ref. 4449), usually 1500 - 2000 m (Ref. 4449). Deep-water; 45°N - 35°S, 98°W - 20°E
Eastern Atlantic: off Morocco, the Azores and Canary Islands and South Africa. Western Atlantic: New Jersey, USA to the Gulf of Mexico and Caribbean. The record from Davis Strait probably refers to Polyacanthonotus rissoanus.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 50.0 cm TL maschio/sesso non determinato; (Ref. 4449)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 26 - 40; Raggi dorsali molli (totale) : 0. Off white, tan or grey in color, lateral line darker; soft rayed portion of anal dark brown (Ref. 6594). Mouth bluish in front, black behind (Ref. 6594). Opercular flap and underside of head bluish (Ref. 6594). Broad separation of the anterior and posterior nostrils. First dorsal spine well posterior to the root of the pectoral fin. Large mouth, maxillary reaching the border of spectacle and much longer preoral snout (Ref. 37108).
Found at bathyal and abyssal depths. Feeds on benthic polychaetes, cnidarians, amphipods (Ref. 4449).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Sulak, K.J., 1990. Notacanthidae. p. 133-135. 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. 4449)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Preferred temperature (Ref.
123201): 3.4 - 5.3, mean 4.1 °C (based on 297 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5630 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: 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).
Trophic level (Ref.
69278): 3.2 ±0.48 se; based on food items.
Resilienza (Ref.
120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
