So I went to the nearby asian store "Oceans" here in Mississauga Canada. The guy at the fish counter did not speak English! However, a nice lady overheard me trying to ask and assisted as a translator. The answer was that yes their fish can be eaten raw, and insisted that customers often ask the question. However that was the extent of the convo.

Unfortunately due to the language barrier I do not know if it's frozen right at the source.