Actinopteri (ray-finned fishes) > Scombriformes
(Mackerels) > Trichiuridae
(Cutlassfishes) > Aphanopodinae
Etymology: Aphanopus: Greek, aphanes = hidden + Greek, pous = foot (Ref. 45335); arigato: From the Japanese arigato meaning thank you, expressing the author's gratitude to his Japanese hosts during a visit to the scientific instituitions of Japan in October-December 1992.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range - 1350 m (Ref. 50610), usually - m (Ref. ). Deep-water; 0°C -
Western Pacific: Japan, Kuril Islands, NW Ridge (Kinmei Seamount). Eastern Pacific: Canada and the USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 72.0 cm SL male/unsexed; (Ref. 41692)
Morphology | Morphometrics
Juveniles mesopelagic at 146-190 m at night, 300-1100 m during day; adults benthopelagic (Ref. 58302).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Parin, N.V., 1995. Three new species and new records of cutlass fishes of the genus Aphanopus (Trichiuridae). J. Ichthyol. 35(2):128-138. (Ref. 41692)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.8 - 18.5, mean 6.8 °C (based on 262 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00046 (0.00020 - 0.00104), b=3.12 (2.92 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming tmax>10).
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .