The difference of biodiversity at varying depths has led to the evolution of distinct populations, connecting to the study that temperature might have a significant effect on them.

These species have been thought to have evolved in northern, colder seas, each diverging off of each other at different points in time, millions of years ago.

They feed commonly on Gammarids (small, shrimp like organisms), Polychaetes (marine worms), and Bivalves (clams and muscles) on the seafloor.

Contrary to the hypothesis of reduced glycolytic capacity in Antarctic fish as an adaptation to low temperatures, findings revealed similar increases in white muscle lactate, intracellular pH drop, and phosphocreatine depletion during strenuous exercise in both species.

The study also proposed a correlation between reduced ATP energy content and muscular fatigue, highlighting the intricate metabolic adjustments crucial for sustaining activity in extreme cold conditions.

As global temperatures continue to rise, understanding how aquatic species adapt to thermal stress becomes increasingly crucial.

The study explored parameters such as standard metabolic rate (SMR), intracellular pH regulation, and the upper critical temperature limit (TcII), to explain the species' thermal tolerance.

[20] Results revealed distinct differences in metabolic responses between the two species, indicating varied thermal sensitivities and adaptation strategies.

[20] These findings have implications for understanding the physiological constraints faced by eelpout fish under thermal stress and offer insights into potential shifts in species distribution patterns driven by global warming.