Trematomus

Trematomus

 

a genus of fishes of the family Nototheniidae. The body sometimes measures as much as 40 cm in length. There are 11 species, distributed near Antarctica and northward to the southern coast of Georgia, in the USA. In littoral waters, T.bernacchi and T. hansoni are the most common species. Many species live at depths of 500–1,000 m, for example, T. loennbergi, T. eulepidotus, and T. lepidorhinus. The eggs are benthic and large. The blood of Trematomus contains organic “antifreezes” (glycoproteins), which lower its freezing point to –2°C. Winter ice fishing for littoral species provides food for residents of antarctic stations.

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Regulation of heat shock genes in isolated hepatocytes from an Antarctic fish, Trematomus bernacchii.
Huth TJ, Place SP (2013) De novo assembly and characterization of tissue specific transcriptomes in the emerald notothen, Trematomus bernacchii.
Heat shock protein expression is absent in the Antarctic fish Trematomus bernacchii (Family Nototheniidae).
Antarctic fishes that utilize sponges for predator avoidance include sharp-spined notothen, Trematomus pennellii, and spotted notothen, T.
Instead, the penguins had eaten predominantly shelf-dwelling prey such as the bentho-pelagic fish Trematomus eulepidotus, along with Pleuragramma antarcticum and Psychroteuthis glacialis (40%, 26%, and 10% by mass, respectively), a diet that yielded 20% more energy per gram than the krill-based diet in 1993 (6.
Morphological features of the lateral line organs in members of the Antarctic genus Trematomus Boul.
Trophic ecology of the emerald notothen Trematomus bernacchii (Pisces, Nototheniidae) from Terra Nova Bay, Ross Sea, Antarctica.