"I'm afraid that I don't tolerate nuts (too high carb) and I steer clear of fish because of the mercury content. Eating tuna fish helped get me where I am. "

I said eat the low mercury fish. Sardines is the lowest, but herring and salmon are also low in mercury.

http://www.gotmercury.org/

Dry roasted peanuts have around 15% of their calories from carbohydrates. Less than 3% of their calories are from sugars. While peanuts are really legumes and not nuts, most people think of them as being nuts.

http://www.nutritiondata.com/facts-C00001-01c219k.html

Dry roasted cashews have 23% of their calories from carbhydrates, but less than 4% from sugars.

http://www.nutritiondata.com/facts-C00001-01c20nt.html

Dry roasted almonds have 13% of their calories from carbohydrates, but less than 4% from sugars.

http://www.nutritiondata.com/facts-C00001-01c20nn.html

Dry roasted pistachio nuts have around 19% of calories from carbohydrates, and less than 6% of calories from sugars.

These are low carb foods, although some are lower in carbs than others.