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Teleostei (teleosts) > Anguilliformes (Eels and morays) > Synaphobranchidae (Cutthroat eels) > Synaphobranchinae
Etymology: Haptenchelys: Greek, hapto, to catch up + Greek, enchelys = eel (Ref. 45335); parviocularis: Name from Latin 'parvus' for 'small’, and 'ocularis' for 'eyed’; referring to the small eyes..

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

Marine; bathydemersal; depth range 2830 - 4866 m (Ref. 96071). Deep-water

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Northwest Pacific: Japan.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 83.3 cm TL male/unsexed; (Ref. 96071); 84.0 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

Vertebrae: 127 - 137. This species is distinguished from its congener H. texis (shown in parentheses), by the following set of characters: total vertebrae 127-137 (vs. 123-133), caudal vertebrae 90-98 (vs. 87-94); snout short, its length 42.5-53.1% UJL (vs. 53.3-63.6 %); eye is much smaller than gill-slit aperture, diameter 37.5-59.4% gill-slit length and 11.8-16.9% UJL (vs. nearly equal to or larger, 84.4-157.6% gill-slit length and 18.4-25.1% UJL); eye positioned closer to middle of the mouth gape, postorbital length-to gape 23.5-32.5% HL and 40.5-50.9% UJL (vs. closer to posterior end of gape, 11.5-18.2% HL and 19.3-31.4% UJL); gill-slit aperture is wide, length 15.8-22.1% HL and 24.8-35.7% UJL (vs. 9.0-14.1% HL and 15.1-24.1% UJL), orientation oblique to body axis (vs. horizontal) (Ref. 96071).

Known from the abyssal zone off southern Japan (Ref. 96071).

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Tashiro, F. and G. Shinohara, 2015. A new species of deep-sea synaphobranchid eel, Haptenchelys parviocularis (Anguilliformes: Synaphobranchidae), from Japan. Ichthol. Res. 62(2):115-121. (Ref. 96071)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 18 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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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=0.00071 (0.00031 - 0.00164), b=3.12 (2.92 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.3 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (54 of 100).

Haptenchelys parviocularis Tashiro & Shinohara, 2014