Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Trichiuridae
(Cutlassfishes) > Aphanopodinae
Etymology: Aphanopus: Greek, aphanes = hidden + Greek, pous = foot (Ref. 45335). More on author: Lowe.
Environment / Climate / Range
Marine; bathypelagic; depth range 200 - 1700 m (Ref. 27000). Deep-water; 71°N - 22°N, 83°W - 45°E (Ref. 6181)
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 80 - ? cm
Max length : 110 cm SL male/unsexed; (Ref. 6181); common length : 70.0 cm SL male/unsexed; (Ref. 3698)
(total): 34 - 41;
soft rays: 43 - 48;
Vertebrae: 97 - 100. Body is extremely elongated, with body depth 10.8 to 13.4 times in SL. The snout is large with strong fang-like teeth. Pelvic fins represented by a single spine in juveniles but entirely absent in adults. Color is coppery black with iridescent tint. The inside of the mouth and gill cavities black.
North Atlantic: on both sides and at underwater rises from Denmark Strait to about 30°N.
Juveniles mesopelagic (Ref. 6181). Bathypelagic (Ref. 58426). Migrate to midwater at night and feed on crustaceans, cephalopods and fishes (mostly macrourids, morids and alepocephalids). Mature at 80 to 85 cm. Eggs and larvae are pelagic (Ref. 6768). Commercial catch up to 1000 t was caught off Madeira with a specialized commercial deep water longline (Ref. 6255). Appear as bycatch in the trawl fishery west of the British Isles, along the Middle-Atlantic Ridge and at Corner Rise. Important and fabled food fish in Madeira (Ref. 4537). Some specimens reach 145 cm (Nuno Marques, Nomad@netmadeira.com, 12/09).
Nakamura, I. and N.V. Parin, 1993. FAO Species Catalogue. Vol. 15. Snake mackerels and cutlassfishes of the world (families Gempylidae and Trichiuridae). An annotated and illustrated catalogue of the snake mackerels, snoeks, escolars, gemfishes, sackfishes, domine, oilfish, cutlassfishes,. scabbardfishes, hairtails, and frostfishes known to date. FAO Fish. Synop. 125(15):136 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00037 (-0.10873 - 0.10947), b=3.19 (3.12 - 3.27), based on LWR estimates for species & family-BS (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.77 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.11-0.25).
Vulnerability (Ref. 59153
): High to very high vulnerability (73 of 100) .