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Perciformes/Cottoidei (Sculpins) >
Liparidae (Snailfishes)
Etymology: Psednos: Greek, psednos, -e, -on = rare (Ref. 45335); rossi: Named for Steve W. Ross.
Eponymy: Dr Steve W Ross is a professor at the University of North Carolina Center for Marine Science. [...] (Ref. 128868), visit book page.
More on authors: Chernova & Stein.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin pelagic-oceanic; profondeur 500 - 674 m (Ref. 53592). Tropical
North Western Atlantic: off Cape Hatteras.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 3.7 cm SL mâle / non sexé; (Ref. 53592)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Rayons mous dorsaux (Total) : 42 - 44; Rayons mous anaux: 33 - 35; Vertèbres: 47. The juvenile holotype of this species is distinguished by the following characters: vertebrae 47; dorsal-fin rays 42-44; no coronal pore; vertical mouth, symphysis of upper jaw above level of eye; body not humpbacked; vertebral column not curved behind cranium; enlarged gill cavity; anus on vertical behind head; notched pectoral fin, rays 8+2+5-6; eye 17-19% HL (Ref. 53592).
Body shape (shape guide): elongated; Cross section: oval.
The species possess a very large superior mouth with vertical jaws, eyes located close to the dorsal contour of the head and oriented to look forward and up, and a straight body, suggesting an adaptation to feeding on detritus and animals (such as copepods) above it in the water column (Ref. 53592).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Chernova, N.V. and D.L. Stein, 2004. A remarkable new species of Psednos(Teleostei: Liparidae) from the western North Atlantic Ocean. Fish. Bull. 102:245-250. (Ref. 53592)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 3.4 - 4, mean 3.6 °C (based on 29 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00237 - 0.01161), b=3.15 (2.96 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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