Actinopteri (ray-finned fishes) > Perciformes/Notothenioidei
(Icefishes) > Nototheniidae
(Cod icefishes) > Trematominae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); scotti: Named after Captain Robert Falcon Scott, leader of British National Antarctic Expedition (Ref. 11892).
More on author: Boulenger.
The genus Pseudotrematomus is a synonym of Trematomus, which is confirmed by a molecular study to be published (J.-C. Hureau, pers. comm. 08 Jun. 2010).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 20 - 793 m. Polar; 60°S - 78°S
Southern Ocean: South Shetland, South Orkney islands, Ross Sea, Breid Bay, Weddell Sea and Antarctic Peninsula (Ref. 11892).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.7 cm TL male/unsexed; (Ref. 124149); max. published weight: 124.60 g (Ref. 124149)
Adults feed primarily on polychaetes, euphausiids, amphipods, together with a lesser amount of isopods. Larval pelagic phase is long (Ref. 89434).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Dewitt, H.H., P.C. Heemstra and O. Gon, 1990. Nototheniidae. p. 279-331. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5179)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: of no interest
Estimates based on models
Preferred temperature (Ref. 115969
): -1.8 - 0.9, mean -0.9 °C (based on 584 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00320 - 0.00717), b=3.19 (3.07 - 3.31), in cm total length, based on LWR estimates for species & Genus-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.2 se; based on diet studies.
Generation time: 11.0 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (47 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .
Nutrients (Ref. 124155
): Calcium = 36.6 [17.9, 76.4] mg/100g ; Iron = 0.351 [0.197, 0.651] mg/100g ; Protein = 17.2 [16.2, 18.2] % ; Omega3 = 0.379 [0.201, 0.692] g/100g ; Selenium = 14.6 [6.0, 30.9] μg/100g ; VitaminA = 27.6 [6.5, 112.8] μg/100g ; Zinc = 0.62 [0.41, 0.94] mg/100g (wet weight); based on nutrient studies.