Myxini (hagfishes) > Myxiniformes
(Hagfishes) > Myxinidae
(Hagfishes) > Eptatretinae
Etymology: Eptatretus: hepta (Gr.), seven; tretos (Gr.), perforated (i.e., with holes), referring to seven gill apertures on what would later be described as Homea banksii (=E. cirrhatus) [range within genus is 6-14 pairs of gill apertures]. (See ETYFish); albiderma: albus (L.), white; derma (Gr.), skin, referring to whitish skin color. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 100 - 200 m (Ref. 123143). Tropical
Western Pacific: Vietnam.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 53.0 cm TL male/unsexed; (Ref. 123143)
Morphology | Morphometrics
This species is distinguished by the following characters: 6 gill apertures and gill pouches; no eyespots or faint; multicusps 3/3; total cusps 41-43; gill pouch 2-3 at the end of dental muscle; total slime pores 74-78 (prebranchial 18-21, branchial 0-1, trunk 48-50, tail 10-11); prebranchial length 2.0-3.0% of TL; pharyngocutaneous duct is confluent with last gill aperture; ventral aorta splitting at about 5-6 gill pouch. Colour of body whitish to light pinkish (Ref. 123143).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Song, Y.S. and J.-K. Kim, 2020. A new species of hagfish, Eptatretus albiderma sp. nov. (Agnatha: Myxinidae), from Vietnam, with the keys to species of Eptatretus in East Asia. Mar. Biodiv. 50(71):1-9. (Ref. 123143)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00446), b=2.92 (2.73 - 3.11), 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 vulnerability (41 of 100).