you could feasibly try any of the Lepisosteus genus gars in colder water, longnose, shortnose, spotted, and even Florida (introduced) have been found in areas where the water gets pretty cold. i definitely wouldn't risk it with a Cuban or tropical gar; an alligator gar could probably do ok though.
i have always been a huge fan of gars and have kept several (and currently all 7 species); i listed mine in a different thread already. i'm currently keeping 13 gars in various tanks. i'll try to dig up some pics to post; for now, here is a video of a crocodile gar (shortnose x alligator hybrid) and Florida gar eating...
Croc Gar Feeding
--solomon
i have always been a huge fan of gars and have kept several (and currently all 7 species); i listed mine in a different thread already. i'm currently keeping 13 gars in various tanks. i'll try to dig up some pics to post; for now, here is a video of a crocodile gar (shortnose x alligator hybrid) and Florida gar eating...
Croc Gar Feeding
--solomon