• Spotted notothen

Latin name

Trematomus nicolai

Other names

Pseudotrematomus nicolai


Body elongated, compressed at the sides. Mouth terminal, with horizontal or oblique slit; maxilla slightly erect. Teeth on jaws small, bristle-like, conical or fanged; palate and scutellum without teeth. The gill membranes are usually elevated to the isthmus and form a short fold; the swim bladder is absent. Reduced number of forming elements in the blood, especially erythrocytes, which contributes to a significant reduction in the viscosity of the blood and, consequently, to its faster circulation in the circulatory system.


Widespread mainly in high latitude Antarctica, off the coast of Antarctica and near the northern boundary of the Southern Ocean - in the thalassobatiale of subantarctic islands.


Live a benthic lifestyle in coastal waters.


Can reach lengths of up to 2m and weights of up to 70kg.

Life history and Behavior

No information

Food and feeding habits

On the vertical walls of the iceberg, diatoms and associated small crustaceans develop, providing food for the juvenile spotted notothens. Lacking a swim bladder and unable to stay afloat for long, they have adapted to suck themselves to the vertical ice surface using pelvic fins. Adults feed mainly on molluscs, bocoplaves, crustaceans and polychaete worms, which are abundant in coastal waters.


No information

Phylum Chordata
Class Actinopterygii
Squad Perciformes
Family Nototheniidae
Genus Pseudotrematomus
Species P. nicolai
Conservation status No information
Habitat Bottom
Life span, years No information
Maximum body weight, kg 70
Maximum length, cm 2
Sailing speed, m/s No information
Threat to people Edible
Way of eating Predator

Write a comment

Note: HTML is not translated!
    Bad           Good

Spotted notothen

Tags: spotted notothen