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Leptacanthichthys gracilispinis (Regan, 1925)

Plainchin dreamarm
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Image of Leptacanthichthys gracilispinis (Plainchin dreamarm)
Leptacanthichthys gracilispinis
Picture by Canadian Museum of Nature, Ottawa, Canada

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Lophiiformes (Anglerfishes) > Oneirodidae (Dreamers)
Etymology: Leptacanthichthys: Greek, 'leptos' = thin or delicate + Greek, 'akantha' = thorn or spine + Greek, 'ichthys' = fish; a "thin-spined fish"; referring to the unusually thin, delicate illicium.
More on author: Regan.

Environment: milieu / climate zone / depth range / distribution range Écologie

marin bathypélagique; profondeur 0 - 2000 m (Ref. 5951), usually 1000 - ? m (Ref. 12204). Deep-water

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North Atlantic: including Canada. Also Pacific Ocean.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 0.8 cm SL mâle / non sexé; (Ref. 12204); 6.9 cm SL (female)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Rayons mous dorsaux (Total) : 4 - 6; Rayons mous anaux: 5 - 6. Unique among dreamers in having a well-developed mandibular spine and a very elongate and narrow pectoral fin lobe (Ref. 12204). Dark in color, with the esca unpigmented in patches (Ref.12204). Metamorphosed females distinguished by the following characteristics: extremely well developed articular spine, considerably longer than quadrate spine; wide ethmoid cartilage and vomer, wider than distance between anterolateral tips of lateral ethmoids and frontals; presence of vomerine teeth; depressed ethmoid region, nasal foramina narrow and oval in shape; long frontals, anterior in posterior, overhanging and extending past the anterior limits of ethmoid cartilage and vomer; nearly linear dorsal margins of frontals; ; ventromedial extensions of frontals approach each other on midline, making contact with parasphenoid; frontals separated from prootics; presence of pterosphenoid; anterior end of illicial trough wider and shallower than posterior end; extremely well developed sphenotic spines; symphysial cartilage of upper jaw longer than wide; lower jaw with small symphysial spine; hyomandibula with double head; ; deeply notched posterior margin of opercle; short and broad subopercle, dorsal end rounded to bluntly pointed, ventral end rounded; absence of first pharyngobranchial; well developed second pharyngobranchial; second hypobranchial directly articulates with second basibranchial; caudal fin rays without internal pigmentation; illicium longer than length of esca bulb; pterygoiphore of illicium cylindrical throughout its length, emerging on snout from between frontal bones, anterior end slightly exposed, posterior end concealed beneath skin; well developed first ray of dorsal fin; dorsal fin rays 4-6; anal fin rays 5; long and narrow pectoral fin lobe, longer than longest rays of pectoral fin; pectoral fin rays 18-22; coracoid lacking posteroventral process; simple pelvic bones, expanded distally; skin is naked, without dermal spinules; darkly pigmented skin of caudal peduncle extends well past base of caudal fin (Ref. 86949). Metamorphosed males: long and narrow pectoral fin lobe, longer than longest pectoral fin rays, articulating along the dorsal margin; short and broad subopercle, dorsal end rounded; lower denticular teeth 6; naked skin, without dermal spinules (Ref. 86949).

Biologie     Glossaire (ex. epibenthic)

Deep-sea species (Ref. 12204). Males parasitic on the females (Ref. 12204).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapore. (Ref. 12204)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)

  Données manquantes (DD) ; Date assessed: 11 July 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: sans intérêt
FAO - Publication: search | FishSource |

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Composition du régime alimentaire
Consommation alimentaire
Food rations
Prédateurs
Ecology
Écologie
Population dynamics
Paramètres de croissance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversion
Recrutement
Abondance
Life cycle
Reproduction
Maturité
Maturity/Gills rel.
Fécondité
Frai
Spawning aggregations
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Pays
Zones FAO
Écosystèmes
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Introductions
BRUVS - Videos
Anatomy
Surface branchiale
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Physiology
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Nutrients
Consommation d'oxygène
Type de nage
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Toxicity (LC50s)
Genetics
Génétique
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Héritabilité
Human related
Aquaculture systems
Profils d'aquaculture
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Ciguatera cases
Stamps, coins, misc.
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Taxonomy
Noms communs
Synonymes
Morphologie
Morphométrie
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References
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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 0.2 - 5.4, mean 3.6 °C (based on 1622 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.6   ±0.5 se; based on size and trophs of closest relatives
Résilience (Ref. 120179):  Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).