Days after the FDA issued a do-not-eat warning about imported shrimp sold at Walmart, a Florida company actually issued a recall of that shrimp and a California company recalled shrimp sold under five other brands.

The FDA has expanded its recall of frozen shrimp over potential radioactive contamination, now affecting more U.S. states.

Southwind Foods, a California-based food supplier, has recalled some shrimp sold under various brand names. Here's what to know.