Trematomus bernacchii Boulenger, 1902
Emerald rockcod
Trematomus bernacchii
photo by Zimmermann, C.

Family:  Nototheniidae (Cod icefishes), subfamily: Trematominae
Max. size:  28 cm TL (male/unsexed); 35 cm TL (female); max. reported age: 10 years
Environment:  demersal; marine; depth range 0 - 700 m
Distribution:  Southern Ocean: Peter Island, South Shetland, Elephant and South Orkney islands. Mac-Robertson, Queen Mary, Adelie Coasts, Weddell, Davis and Ross seas. East Antarctica from Queen Maud Land to Terre Adelie.
Diagnosis:  Dorsal spines (total): 4-6; Dorsal soft rays (total): 34-39; Anal soft rays: 31-35. Body brownish, large dark spots in two or three series on body. Spinous dorsal blackish in upper part (Ref. 11892).
Biology:  Found in seafloors, well adapted to extremely low and stable temperatures (-1.86°C), annual mean temperature of McMurdo Sound) (Ref. 45168). Feed on polychaetes, gastropods, isopods, amphipods and few algae. Spawn once a year (Ref. 1071). Utilized for human consumption.
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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