I see gar for sale in CT all the time so I find it hard to believe that they are illegal here. These are reputable stores too, so I highly doubt they would risk being shut down just in order to sell some gar. I would call the DEEP and get in touch with them. They can tell you if gar are illegal or not.
OK-So I called the DEEP and spoke to a very nice man, Gar are indeed ILLEGAL in CT. He was very surprised to hear about fish stores carrying Gar in CT. Hope I didn't get anyone in too big of trouble!