grocery stores in Brussels
 

If anyone has any knowledge of Grocery stores chains in Belgium I would like to know what their names are as I will be visiting Brussels and am interested in viewing what kind of frozen/canned seafood is being marketed

The main grocery chains in Brussels (and Belgium) are GB and Delhaize.
http://www.delhaize.be/
http://www.gb.be/

Both have many stores in the Brussels region, both large stores and smaller "metro" versions.
The most upscale grocery store is Rob's Fine Foods, which is in Woluwe St. Pierre (easily reached by bus or metro/tram combo). www.robfinefood.be
Out in the Fort Jaco section of Uccle is La Grande Epicerie, another upscale grocery store (take the 92 tram to Fort Jaco and walk down Chaussee de Waterloo about two blocks).

Colruyt is a budget supermarket, lots of frozen items. If you venture out to Rob's Fine Foods, there's a Colruyt across the street.
http://www.colruyt.be/colruyt/colruyt.jsp

You can also find Carrefour in Brussels.

Delhaize i believe owns Food Lion stores in the U.S. or once did

The biggest Grocery store (in size rather than amount of stores) is Cora. There is a nice one in Brussels not far from the airport (woluwe)

www.cora.be