In large stockpot or steam-jacketed kettle, combined onions, tomatoes in juice, black beans, corn and chiles.
Add broth, lime juice, chili powder. Bring to boil; reduce to simmer and cook 10 minutes.
Pan-sear cod in lightly oiled non-stick skillet about 3 minutes; add cod to chowder.
Simmer chowder additional 20 minutes over medium-low heat.
For each serving, portion 1 1/2 cups soup into shallow bowl. Garnish with tortilla corn chips, if desired.Makes 6