Actinopterygii (ray-finned fishes) > Osmeriformes
(Smelts) > Opisthoproctidae
(Barreleyes or spookfishes)
Etymology: Dolichopteryx: Greek, dolichos = long + Greek, pteryx, = wing, fin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 200 - 2000 m (Ref. 58018). Deep-water
North Pacific: southern Bering Sea to Honshu, Japan, the Sea of Okhotsk and southern British Columbia, Canada.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.7 cm SL male/unsexed; (Ref. 43939)
Morphology | Morphometrics
Possibly found in depths shallower than 200 m (Ref. 43939).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mecklenburg, C.W., T.A. Mecklenburg and L.K. Thorsteinson, 2002. Fishes of Alaska. American Fisheries Society, Bethesda, Maryland. xxxvii +1037 p. (Ref. 43939)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 0.3 - 3.6, mean 3 (based on 70 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.1 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
): Moderate vulnerability (38 of 100) .