Fish · notothenioid

Emerald rockcod

Trematomus bernacchii

PacificAtlanticIndianSouthernArctic A single ocean

Depth

From the shore down to 700 m, mostly above 200 m

Size

Up to 35 cm, the female is larger than the male

Diet

Marine worms, sea snails, small crustaceans, some algae

Zone

The sea floor · 200 – 3,500 m

Key facts

• Its blood contains antifreeze proteins that keep it from freezing in water at -1.9 °C.
• It has lost the heat-alarm response that almost all other animals have.
• Its name honors Louis Bernacchi, a physicist who collected it during one of the first expeditions to Antarctica.
• It can live about ten years.

Verified sources

1. FishBase : Trematomus bernacchii
2. Fishes of Australia : Emerald Notothen
3. Buckley, Place & Hofmann 2004, Journal of Experimental Biology

In the game: To observe

In the same zone

Turquet’s octopusPareledone turqueti Antarctic feather starPromachocrinus kerguelensis and related species Antarctic slope shrimpNematocarcinus lanceopes Pioneer tubewormTevnia jerichonana Scorching chimney wormParalvinella sulfincola Hairy vent snailAlviniconcha spp.