Probably would be fine as long as there is some air holes kept open in the frozen surface for gas transfer.There's no way one could survive a PA winter is there? In a pond that it. I'm building a semi large one next April and I'm definitely going to get some longnose for it but if a gator could tolerate local temps that'd be a nice addition, keep those blue herons away .
I am now raising four Gator Gars for my farm pond to go with the Longnose gars.
I have lost double digit 12" + Florida gars in several different seasons to a zero percent survival rate.
The northern most natural habitat (Cypress bog) of the Gator Gar is in the extreme southern end of Maryland in Pocomoke. They live year round there. I am near the PA line, and I will see how it works next year.