Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Muraenidae (Moray eels) > Muraeninae
Etymology: Echidna: Greek, echidna = viper, 1847 (Ref. 45335); awa: Name 'awa' from the Japanese word meaning 'bubble', in reference to the spots on the jaws of the new species, which are reminiscent of bubbles. A noun in apposition.
Eponymy: In Greek mythology Echidna was a female monster, and mother of many other monsters including the Hydra. Hesiod described her as “half a nymph with glancing eyes and fair cheeks, and half again a huge snake, great and awful, with speckled skin.” (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 3 - 150 m (Ref. 138933). Temperate
Northwest Pacific: Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 48.5 cm TL male/unsexed; (Ref. 138933); 44.0 cm TL (female)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 123 - 132. This species is distinguished from its congeners by the following set of characters: small- to medium-sized moray eel 221.0-510.1 mm TL; anus situated at about mid-body (pre-anus length 47.3-52.1% of TL); snout short, blunt (snout length 13.6-19.6% of HL); two branchial pores; both jaws with many conical and few molar-like teeth, without canines; peripheral series of intermaxillary teeth mostly uniserial, infrequently biserial; median series of intermaxillary teeth usually uniserial (rarely biserial or absent); vomerine teeth uniserial or biserial, sometimes absent; maxillary teeth and the middle teeth of the lower jaw have serrated edges; body brown, entirely covered with yellow vermiculate markings; oral cavity white; sensory pores on infraorbital and mandibular enclosed by rounded white blotches; white blotches on mandibular sometimes interconnected; anal-fin margin yellowish-white, sometimes indistinct; and predorsal vertebrae 4-7 (mode 5), preanal vertebrae 48-55 (53), and total vertebrae 123-132 (130) (Ref. 138933).
Body shape (shape guide): fusiform / normal.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Fujita, A., N. Oomori, H. Senou and H. Wada, 2026. Two new species of the genus Echidna (Anguilliformes: Muraenidae) from the Pacific coast of southern Japan. Ichthyol. Res. 1-14. (Ref. 138933)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
Trophic level (Ref. 69278) |
3.4 ±0.6 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 (39 of 100). 🛈 |