Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Ophichthidae (Snake eels) > Ophichthinae
Etymology: Ophichthus: Greek, ophis = serpent + Greek, ichthys = fish (Ref. 45335); yamakawai: Named after Takeshi Yamakawa,.
Eponymy: Takeshi Yamakawa (d: 1942) is a fish collecting specialist who is an ichthyologist at Kochi University (Japan). [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 100 m (Ref. 131479). Subtropical
Northwest Pacific: Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 35.6 cm TL male/unsexed; (Ref. 131479)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 172. This species with 4 large dark blotches along lateral line from mid-trunk to posterior tail is distinguished by the following set of characters: head 7.5% TL; tail 58% TL; dorsal-fin origin is behind pectoral-fin tip, 2.7 times pectoral-fin length; teeth are small and conical, uniserial on maxilla, mandible and vomer; total vertebrae 172, predorsal 16, preanal 67 (Ref. 131479).
Collecting depth is unknown, but it was possibly collected from deep water ca. 100 m (T. Yamakawa, pers. comm., in Ref. 131479).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Hibino, Y., J.E. McCosker and F. Tashiro, 2019. Four new deepwater Ophichthus (Anguilliformes: Ophichthidae) from Japan with a redescription of Ophichthus pallens (Richardson 1848). Ichthyological Research 66(2):289-306. (Ref. 131479)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).