Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Anguilliformes
(Eels and morays) > Ophichthidae
(Snake eels) > Myrophinae
Etymology: Pylorobranchus: From the Greek pylorus (gatekeeper) and branchos (gill), neuter, in reference to
the lappet-like structure located before the gill opening.; hearstorum: Named for William and Margaret Hearst.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 892 - 966 m (Ref. 95665). Deep-water
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Pacific: Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 121.8 cm TL (female)
Morphology | Morphometrics
This elongate myrophine is distinguished by the following characteristics: tail 66% of TL; dorsal fin arise in the posterior trunk region; dorsal fin is slightly elevated, while anal fin is very elevated; developed, wedge-shaped pectoral fin, about four times eye diameter; moderate eye, 17 in HL; rear margin of orbit is above posterior third of upper jaw; small cephalic pores, SO 1 x 3, IO 5 x 2, POM 7 x 3 (2 right), and ST 3 present; needle-shaped teeth, not enlarged, slightly retrorse, uniserial on jaws and vomer; body color brownish black, median fins grayish black, with anal-fin membrane black posteriorly; vertebral formula 39/66/226 (Ref. 95665).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McCosker, J.E., 2014. A gigantic deepwater worm eel (Anguilliformes: Ophichthidae) from the Verde Island Passage, Philippine Archipelago. pp. 333-340. In Williams, G.C. and T.M. Gosliner (eds.) 2014. The Coral Triangle: the 2011 Hearst Philippine biodiversity expedition. California: San Francisco, California Academy of Sciences, 593 p. (Ref. 95665)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00076 (0.00029 - 0.00197), b=3.06 (2.83 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.8 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (59 of 100) .