Emerald rockcod

The emerald rockcod or emerald notothen (Trematomus bernacchii) is a commercially important species of notothen.[1]

Emerald rockcod

Emerald rockcod
Not evaluated (IUCN 3.1)
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Perciformes
Suborder:
Notothenioidei
Family:
Nototheniidae
Genus:
Trematomus
Species:
T. bernacchii
Binomial name
Trematomus bernacchii
Boulenger, 1902
Synonyms
  • Notothenia bernacchii (Boulenger, 1902)
  • Pagothenia bernacchii (Boulenger, 1902)
  • Pseudotrematomus bernacchii (Boulenger, 1902)

Description

This species is mostly brown in color with darker spots. Females of this species can reach a length of 35 cm (14 in), while males only reach 28 cm (11 in). The maximum reported age for this species is 10 years. [1]

Distribution, habitat, and habits

This species is native to the Southern Ocean[1] on the seafloor at depths from very shallow waters to 700 m (2,300 ft). It is adapted to living in waters of extremely low temperature (-1.86°C mean temperature in McMurdo Sound). It consumes various invertebrates and small fishes and also is known to feed on some algae.[1] Their foraging techniques make them the primary predators of the medium-sized population of Antarctic scallop, A. colbecki.[2]

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References
  1. Froese, Rainer and Pauly, Daniel, eds. (2014). "Trematomus bernacchii" in FishBase. February 2014 version.
  2. Dell’Acqua, Ombretta, et al. “Predation Impact of the Notothenioid Fish Trematomus Bernacchii on the Size Structure of the Scallop Adamussium Colbecki in Terra Nova Bay (Ross Sea, Antarctica).” Polar Biology, vol. 40, no. 8, 2017


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