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Perciformes/Notothenioidei (Icefishes) >
Nototheniidae (Cod icefishes) > Trematominae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); pennellii: Species name pennellii honors Harry LL Pennell, captain of the ship Terra Nova of Scott's British Antarctic Expedition of 1910 (Ref. 45168).
Eponymy: Commander Harry Lewin Lee Pennell, R.N. (1882–1916) served (as Navigator, at the time he was a Lieutenant) on the ‘Terra Nova’, British Antarctic Expedition (1910–1913). He died during the Battle of Jutland. (Ref. 128868), visit book page.
More on author: Regan.
Taxonomic Remarks
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). The species Pseudotrematomus centronotus (Regan, 1914) is recognised as valid.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser demersal; tiefenbereich 0 - 732 m, usually 1 - 112 m (Ref. 11892). Polar; 60°S - 78°S
Southern Ocean: Scotia Arc, South Orkney Islands, Davis and Ross seas.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 29.7 cm TL Männchen/unbestimmt; (Ref. 124149); 26.0 cm TL (female); max. veröff. Gewicht: 342.00 g (Ref. 124149); max. veröff. Gewicht: 342.00 g
Rückenflossenstacheln (insgesamt) : 4 - 6; Rückenflossenweichstrahlen (insgesamt) : 32 - 35; Afterflossenweichstrahlen: 29 - 31. Brownish with 2 or 3 large dark spots, part of spinous dorsal blackish (Ref. 11892).
Body shape (shape guide): fusiform / normal.
Adults live on seafloor and spawns during summer (Ref. 45168). They feed primarily on errant polychaetes, with lesser amounts of amphipods, fish eggs and mollusks.
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 Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Bevorzugte Temperatur (Ref.
123201): -1.8 - -1.1, mean -1.7 °C (based on 740 cells).
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00367 - 0.00823), b=3.26 (3.14 - 3.38), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.3 ±0.2 se; based on diet studies.
Widerstandsfähigkeit (Ref.
120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Fec = 2,500-6,600).
Anfälligkeit der Fischerei (Ref.
59153): High vulnerability (63 of 100).
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Nährstoffe (Ref.
124155): Calcium = 27.8 [14.3, 75.3] mg/100g; Iron = 0.418 [0.183, 0.866] mg/100g; Protein = 17 [16, 18] %; Omega3 = 0.389 [0.199, 0.723] g/100g; Selenium = 14.2 [5.5, 40.4] μg/100g; VitaminA = 23.3 [4.5, 125.4] μg/100g; Zinc = 0.641 [0.397, 1.022] mg/100g (wet weight); based on
nutrient studies.