Antifreeze proteins protect snailfish from cold weather.
In 2019, scientists also discovered the tiny tadpole-like biofluorescent snailfish glowing brilliant green and red in the icy habitat off the coast of Greenland. During the trip — part of the Constantine S. Niarchos Expedition, a series of science-based expeditions led by the"The snailfish was one of the few species of fish living among the icebergs, in the crevices," Gruber said.
It's rare for Arctic fishes to exhibit biofluorescence. Normally this characteristic is found in fish swimming in warmer waters. The scientists further examined the biofluorescent properties of the snailfish and found "two different types of gene families encoding for antifreeze proteins," according to a separate statement, an adaptation that essentially helps them avoid turning into frozen fish sticks.Polar fishes have evolved antifreeze proteins that allow them to survive in subzero temperatures.
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