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> Anguilliformes (Eels and morays) > Synaphobranchidae (Cutthroat eels) > Ilyophinae
Etymology: Dysommina: Greek, dys, dyo = two + Greek, omma = eye; orientalis: Name from Latin 'orientalis' meaning 'of the east', referring to the type locality in the Far East off Taiwan and Japan.

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

marin benthopélagique; profondeur 120 - 400 m (Ref. 129611). Subtropical

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Western Pacific: Taiwan, Japan and Vietnam.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 62.0 cm TL mâle / non sexé; (Ref. 129611)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Vertèbres: 137 - 141. This species is distinguished by the following set of characters: predorsal vertebrae 11-12, total vertebrae 137-141, eye diameter less than 10% head length; vomerine dentition is reduced to 3 large compound teeth set in papillose pads with a fourth small tooth more posteriorly, maxillary and mandibular teeth numerous but small (Ref. 129611). Compared to specimens collected from Taiwan and Japan, the only Vietnamese specimen has a slightly larger pre-anal length, 30.3% TL (vs. 27.0%-29.8% TL) and a slightly shorter tail 69.7% TL (vs. 70.2%-73.0% TL); specimen has an adnasal pore, whereas absent in the Taiwanese specimen (Ref. 131161).

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

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Tighe, K.A., H.-C. Ho and K. Hatooka, 2018. A new species of the genus Dysommina (Teleostei: Anguilliformes: Synaphobranchidae: Ilyophinae) from the Western Pacific. Zootaxa 4454(1):43-51. (Ref. 129611)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)

Non évalué

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: sans intérêt

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [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).

Niveau trophique (Ref. 69278): 4.0 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (45 of 100).

Dysommina orientalis Tighe, Ho & Hatooka, 2018