Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Channichthyidae
Etymology: Pseudochaenichthys: Greek, pseudes = false + Greek, chaino = with the mouth opened (Ref. 45335). More on author: Norman.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 475 m. Polar; 53°S - 73°S, 179°W - 24°W
Southern Ocean: known from the islands of the Scotia Sea and the northern part of the Antarctic Peninsula to Scott Island.
Length at first maturity / Size / Weight / Age
Maturity: Lm 42.5, range 44 - 50 cm
Max length : 60.0 cm TL male/unsexed; (Ref. 5200); common length : 50.0 cm TL male/unsexed; (Ref. 2805); max. published weight: 2.1 kg (Ref. 50743)
Adults feed mainly on krill and fish. Synchronous spawner (Ref. 50743).
Iwami, T. and K.-H. Kock, 1990. Channichthyidae. p. 381-389. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. 462 p. (Ref. 5200)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Fisheries: minor commercial
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): -1.3 - 1.2, mean -0.1 (based on 18 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00289 - 0.01442), b=3.17 (2.97 - 3.37), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.1 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.24; tm=4; Fec = 4,666).
Prior r = 0.37, 2 SD range = 0.14 - 0.96, log(r) = -0.99, SD log(r) = 0.48, Based on: 2 K, 2 tgen, 10 Fec records
Vulnerability (Ref. 59153
): Moderate to high vulnerability (47 of 100) .