Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Channichthyidae
Etymology: Chaenocephalus: Greek, chaeno = to yawn + Greek, kephale = head (Ref. 45335).
Environment / Climate / Range
Marine; demersal; depth range 5 - 770 m. Polar, preferred -1°C (Ref. 107945); 53°S - 65°S, 67°W - 4°E
Southern Ocean: in the vicinity of Bouvet Island, Scotia Sea, and northern part of the Antarctic Peninsula.
Length at first maturity / Size / Weight / Age
Maturity: Lm 44.9  range ? - ? cm
Max length : 72.0 cm TL male/unsexed; (Ref. 4883); common length : 50.0 cm TL male/unsexed; (Ref. 2805); max. published weight: 3.7 kg (Ref. 4883)
Adults feed mostly on fish and krill. Synchronous spawner (Ref. 50743). Larvae have a long pelagic phase (Ref. 71843). Utilized as a food fish (Ref. 4931).
There is only one generation of oocytes in the ovaries indicative of determinate fecundity (Ref. 50743). Mature females may spawn for the first time from around 6-8 years of age (Ref. 71843).
Hureau, J.-C., 1985. Channichthyidae. p. 261-277. In W. Fischer and J.C. Hureau (eds.) FAO species identification sheets for fishery purposes. Southern Ocean (Fishing areas 48, 58 and 88). Rome. Vol. 2. (Ref. 2805)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00091 (0.00074 - 0.00113), b=3.48 (3.42 - 3.54), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.2 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.24; Fec = 7,358).
Vulnerability (Ref. 59153
): High to very high vulnerability (68 of 100) .