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 / Climate / Range
Marine; demersal; depth range 0 - 475 m. Polar, preferred -1°C (Ref. 107945); 53°S - 66°S
Southern Ocean: known only from the islands of the Scotia Sea and the northern part of the Antarctic Peninsula.
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. 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=0.00646 (0.00293 - 0.01422), b=3.17 (2.97 - 3.37), 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) .