Wiktionary
cryophilic
a. (context microbiology English) growing best at low temperatures, typically below 10 degrees Celsius
Usage examples of "cryophilic".
I can reply is even the most rugged, xenophile, radiation-resistant cryophilic anaerobes we can imagine are going to have a hard time maintaining more than a toehold on current-day Mars, spending most of their time in a non-metabolic, frozen state, waiting for the times when conditions are right and water can be briefly liquid on the surface.