Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Ophichthidae
(Snake eels) > Ophichthinae
Etymology: Ophichthus: Greek, ophis = serpent + Greek, ichthys = fish (Ref. 45335); semilunatus: Name from Latin ‘semi’ for half and ‘lunatus’ for moon, referring to the half-moon blotch on the anterior margin of anus.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Subtropical
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northwest Pacific: Taiwan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL (female)
Morphology | Morphometrics
Vertebrae: 176. This species is distinguished by the following set of characters: head 9.4% TL; tail 57.5% TL; snout is not acute, 19.0% HL; eye large, 93.3% of snout length and 17.7% HL; dorsal-fin origin is well behind pectoral-fin tip by about three pectoral-fin lengths; teeth on maxilla triserial; SO 1+3; POM 6 or 7+2; predorsal vertebrae 29, preanal vertebrae 64, total vertebrae 176; anterior margin of anus with a half-moon shaped dark marking (Ref. 121619).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Hibino, Y., Y.-C. Chiu, H.-M. Chen and K.-T. Shao, 2019. Two new species of the genus Ophichthus from the western central Pacific Ocean, with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes: Ophichthidae). Zootaxa 4702(1):140-154. (Ref. 121619)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00052 - 0.00302), b=2.91 (2.70 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.9 ±0.7 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.).
Vulnerability (Ref. 59153
): Moderate vulnerability (40 of 100) .