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Notacanthiformes (Halosaurs and deep-sea spiny eels) >
Notacanthidae (Deep-sea spiny eels)
Etymology: Lipogenys: Greek, lipos = fat + Greek, geny, -yos = face, jaw (Ref. 45335).
Eponymy: Professor Theodore Nicholas Gill (1837–1914) was an American ichthyologist, malacologist, mammologist and librarian, a zoologist at George Washington University and associated with the Smithsonian Institution for more than half a century. [...] (Ref. 128868), visit book page.
More on authors: Goode & Bean.
Environment: milieu / climate zone / profondeur / distribution range
Écologie
marin bathydémersal; profondeur 400 - 2000 m (Ref. 50674). Deep-water; 50°N - 35°N, 76°W - 48°W
Northwest Atlantic: Nova Scotia and Hudson Canyon (Ref. 37108). Southwest Pacific: Australia (Ref. 75154).
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 50.0 cm TL mâle / non sexé; (Ref. 11041)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 6 - 8; Rayons mous dorsaux (Total) : 4 - 5; Épines anales: 44 - 58; Rayons mous anaux: 67 - 88; Vertèbres: 228 - 234. Tail slender and tapering to a point. Mouth inferior, small and sucker-like; upper lip with thick, pleated folds; posterior end of maxilla bent sharply downward, forming a flap-like structure; fleshy papillae on snout bordering upper lip. Teeth absent. Dorsal fin short-based, located above anus, the first 4-6 rays hard and spinous, increasing in length from front to back, the remainder soft and segmented, membrane connecting all rays except for first I-III spines. Anal fin long, extending from just behind anus to tip of tail, anterior rays spinous, posterior rays segmented, the transition gradual. Caudal fin absent (Ref. 11041). Light brown, lining of gill chamber and rim of opercular branchiostegal flap dark brown, mouth and lining of buccal cavity light yellowish tan (Ref. 37108).
Body shape (shape guide): elongated; Cross section: circular.
Feed mostly on organic material contained in bottom sediment drawn up by the sucker-like mouth [RF doubts this is a detritus feeder; the elaborate mouth without teeth looks like a specialization for extracting soft-bodied benthic invertebrates out of the ground; also, there are no gill rakers to filter detritus (Ref. 50674)]. No obvious sexual dimorphism; a female of 37.5 cm SL was still immature (Ref. 50674).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Sexes can be separated by testis and ovaries; there is no indication of internal fertilization.
Smith, D.G., 1997. Lipogenyidae. Spiny sucker eels. p. 1629. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the WCP. Vol. 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome. (Ref. 11041)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-1)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Preferred temperature (Réf.
123201): 3.4 - 5.3, mean 3.9 °C (based on 17 cells).
Phylogenetic diversity index (Réf.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00251 (0.00100 - 0.00628), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.5 ±0.37 se; based on food items.
Résilience (Réf.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Assuming tm >=5).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
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