It usually has a fairly stable temperature, but it does sometimes partially freeze over. The river where I caught all my fish in also freezes over and contains longnose gar, so maybe they might be a better bet?
I found this link on PA gar from the PA Fish & Boat Commission. It says that spotted and longnose gar still occur here in western PA, and shortnose gar disappeared recently. I remember from River Monsters and a few other websites that the alligator gar did use to occur here too. Any ideas on a species choice?
The average depth of the pond is about 4 ft, and the deepest section is at least 6 ft. The 6ft section accounts for about 1/4 of the total area of the pond.
Any ideas on where to get a longnose or shortnose gar if I decide to go with a native species? The spotted gar are native, but are also illegal to have as far as I know. Maybe a crocodile gar (alligator gar hybrid) might fare better due to hybrid vigour and the adaptibility of alligator gar in comparision to other gar?