Actinopterygii (ray-finned fishes) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails) > Macrourinae
Etymology: Coryphaenoides: Greek, koryphaina = dolphin fish + Suffix oides = similar to (Ref. 45335); acrolepis: From the Greek 'acros' meaning sharp and 'lepis' meaning scale (Ref. 6885).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; non-migratory; depth range 300 - 3700 m (Ref. 50550), usually 900 - 1300 m (Ref. 56476). Deep-water; 1°C - 4°C (Ref. 1371); 62°N - 28°N, 134°E - 115°W (Ref. 1371)
North Pacific: northern Japan to Okhotsk and Bering seas, south along North American coasts to northern Mexico.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 46 - 65 cm
Max length : 104 cm TL male/unsexed; (Ref. 56527); common length : 46.9 cm TL male/unsexed; (Ref. 56476); max. published weight: 3.0 kg (Ref. 56476); max. reported age: 73 years (Ref. 35883)
Morphology | Morphometrics
soft rays: 94. Head large, scaled completely except for a narrow ventrolateral strip on snout; eyes also large; snout short, pointed and with tubercular scales along its leading edge; chin with a small chin barbel. Body tapering to a point posteriorly from behind the insertion of the first dorsal-fin spine. Scales adherent, with 3 to 5 divergent rows of coarse spinules. Pyloric caeca 12 to 14. Overall color is gray to grayish-brown in young, turning to dark brown in adults; fins generally dark. Branchiostegal rays: 6-6 (Ref. 36385).
A benthopelagic mid-slope species, that appears to wander off slope bottoms into midwater (Ref. 1371). Adults feed on small fish, euphausiids, prawns, amphipods and cephalopods (Ref. 1371). Oviparous, with planktonic larvae (Ref. 36385).
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p. (Ref. 1371)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 2.3 - 3.8, mean 2.4 (based on 174 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00158 (0.00080 - 0.00315), b=3.20 (3.03 - 3.37), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.54 se; Based on food items.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (K=0.02-0.04; tmax=73).
Prior r = 0.12, 2 SD range = 0.02 - 0.62, log(r) = -2.12, SD log(r) = 0.82, Based on: 1 K, 2 tgen, 1 tmax, records
Vulnerability (Ref. 59153
): Very high vulnerability (79 of 100) .