What are the best carb free / low carb foods for veggies??

Hi

I was just wondering what the best low carb foods were for veggies to eat and still be full up. I think i eat way too many to fill me up such as pasta, and potatoes, but also find that i need a decent amount of fibre to keep me regular which seems to come in the form of carbs. They also seem to be in a lot of vegetables so i'm just wondering what kind of foods people eat who are on low carb diets? Obviously it can't contain meat or fish though.....

Cheers