Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Nototheniidae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); pennellii: Named after Commander Harry L.L. Pennell, R.N., Captain of the Expedition ship Terra Nova, British Antarctic Expedition 1910-1913 (Ref. 11892). More on author: Regan.
This species is placed in the genus Pseudotrematomus in Eschmeyer (CofF ver. Sep. 2011: Ref. 88002). The species Pseudotrematomus centronotus (Regan, 1914) is recognised as valid.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 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.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.0 cm SL male/unsexed; (Ref. 5179)
Morphology | Morphometrics
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 Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Fisheries: of no interest
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): -1.8 - -1.1, mean -1.7 (based on 740 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00305 - 0.01366), b=3.18 (3.00 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.2 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 2,500-6,600).
Vulnerability (Ref. 59153
): High vulnerability (63 of 100) .