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Teleostei (teleosts) > Anguilliformes (Eels and morays) > Ophichthidae (Snake eels) > Ophichthinae
Etymology: Apterichtus: From the Greek απτερόν (apteron), without fins, and ίχθύς (ichtus, more correctly written ichthys; masculine), fish.; hatookai: Named for Mr. Kiyotaka Hatooka, ichthyological curator of OMNH..

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

Marine; benthopelagic; depth range 4 - 7 m (Ref. 101270). Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Northwest Pacific: Japan and China (SE Fujian).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 53.4 cm TL male/unsexed; (Ref. 101270)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished by the following characters: head 5.1-6.1 % TL, 13.3-16.0 % of preanal length; tail 60.4-62.0 % TL; body depth at gill opening 0.9-1.5 % TL, 2.3-3.8 % of preanal length; the anterior tip of the lower jaw is below the center of the eye; supratemporal pores 7; preopercular pores 4; lateral-line pores before anus 54-58; preanal vertebrae 52-56, total 137-141; MVF 54-139 (Ref. 95408); teeth conical and uniserial on jaws and vomer (with a single vomerine tooth); body coloration is yellowish brown to dark brown with small black punctuations, pale brown blotches on head and breast; with fresh specimens have reddish brown blotches, slightly paler along mid-flanks, brilliant orange blotches on head and breast, some larger than eye (Ref. 101270).

Occurs in sandy bottoms (Ref. 95408).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : McCosker, John E. | Collaborators

McCosker, J.E. and Y. Hibino, 2015. A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species. Zootaxa 3941(1):49-78. (Ref. 101270)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 18 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
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Ecology
Ecology

Population dynamics
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Length-length rel.
Length-frequencies
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Life cycle
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Maturities
Fecundities
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Egg(s)
Egg developments
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Distribution
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Anatomy
Gill areas
Brains
Otoliths

Physiology
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Nutrients
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Swimming type
Swimming speeds
Visual pigment(s)
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Diseases / Parasites
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Genetics
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Stamps, coins, misc.

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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00089 (0.00039 - 0.00204), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.7 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (41 of 100).

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