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Pseudochaenichthys georgianus Norman, 1937

South Georgia icefish
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Native range | All suitable habitat | Point map | Year 2050
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Pseudochaenichthys georgianus   AquaMaps   Data sources: GBIF OBIS
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Image of Pseudochaenichthys georgianus (South Georgia icefish)
Pseudochaenichthys georgianus
Picture by Reyes, P.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Perciformes/Notothenioidei (Icefishes) > Channichthyidae (Crocodile icefishes)
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 Ecology

Marine; demersal; depth range 0 - 475 m. Polar; 53°S - 73°S, 179°W - 24°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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 43.6, 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)

Short description Identification keys | Morphology | Morphometrics

Vertebrae: 54 - 55.

Biology     Glossary (e.g. epibenthic)

Adults feed mainly on krill and fish. Synchronous spawner (Ref. 50743).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435: Version 2024-1)

  Endangered (EN) (A2bcde); Date assessed: 29 November 2023

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: minor commercial
FAO - Fisheries: landings; Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
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Eggs
Egg development
Larvae
Larval dynamics
Distribution
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Anatomy
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Otolith
Physiology
Body composition
Nutrients
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Swimming type
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Visual pigments
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Diseases & Parasites
Toxicity (LC50s)
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Genetics
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Taxonomy
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Synonyms
Morphology
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References
References

Tools

E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Fisheries: landings; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): -1.3 - 1.2, mean -0.1 °C (based on 18 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00296 - 0.01410), 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.
Generation time: 4.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.24; tm=4; Fec = 4,666).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (47 of 100).
Climate Vulnerability (Ref. 125649):  High to very high vulnerability (73 of 100).
Price category (Ref. 80766):   Low.
Nutrients (Ref. 124155):  Calcium = 23.2 [14.6, 53.2] mg/100g; Iron = 0.503 [0.205, 0.955] mg/100g; Protein = 17.8 [16.2, 19.5] %; Omega3 = 0.358 [0.209, 0.605] g/100g; Selenium = 17.6 [7.7, 37.3] μg/100g; VitaminA = 12.6 [2.9, 55.6] μg/100g; Zinc = 0.374 [0.259, 0.557] mg/100g (wet weight);