Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 140 - 600 m (Ref. 44036). Deep-water
Western Pacific: southern Japan. More recent works report of its occurrence in Taiwan (Ref. 5193), Malaysia (Ref. 5756) and the Chesterfield Islands (Ref. 11897).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 95.0 cm SL male/unsexed; (Ref. 559); common length : 35.0 cm NG male/unsexed; (Ref. 27550)
spines: 0. Longest ray of pelvic fin thin, long reaching to or near tip of pectoral fin. Lip of upper jaw thin. Upper jaw with a short band of villiform teeth; lower jaw, palatine, pre vomer and tongue toothless. Body purplish-brown, semi-transparent. Attain 95 cm SL.
Feeds on prawns (Ref. 27550).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 126983)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 8.1 - 18.9, mean 13.1 °C (based on 271 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5315 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.2 ±0.73 se; based on food items.
Fishing Vulnerability (Ref. 59153
): High to very high vulnerability (70 of 100).