Adaptation

My three A. elongatus which were outdoor didn’t make it through the frost.
Looking at the survivors of the cold period in January-February, it seems that the survivors are restricted to part of the Austrolebias phylogeny I made based on molecular data. This part includes some relatively large species. The amount of data is, of course, almost negligible, so this is just an impression leading to a new hypothesis:
Large size in Austrolebias might be in some cases an adaptation to cold environments.

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