Lowest temp range for the Goonch I looked up appears to be low 60's (Planetcatfish.) Maybe there are some others that handle much colder water?
I haven't kept one of these, but 64 doesn't seem that cold. (Trout for example have a preference for 48, while the common carp can be found at 37.)
OTOH, average monthly January temps for New York get down to 5. If the pond was very large (and deep) and had a strong heater, I would think it could work, assuming Gooch can last at temps much lower than 64, but still the pond has to be heated I would think and that would be expensive.