sushi is touch and go i think.  I have heard that sushi places add a special mixutre in with the rice to help make it stick and it does contain sugar... although I can't be certain.  Looking at calorie king 1 roll, either prawn, terri chicken and even the chicken and avo all contain about the 7-8g of sugar.  However the food standards website says something different.  Calorie king says the california roll has 8g of sugar, the food standards website says it has 2.8g of sugar per roll (1.23g of fructose).  I'd be more inclined to go with the food standards results then calorie king.  At the end of the day you could make worse choices.  I've actually had sushi not a few weeks ago and it was yum! I was naughty and got the terri chicken though :)  I don't see a problem with it as long as it's not an every day kinda thing