Cod with Mushroom-Herb Duxelles

Name: Cod with Mushroom-Herb Duxelles
Cuisine: Mediterranean
Ingredients: 8-oz fresh mushrooms (ie Porcini, Shitake, Bolete, White, Baby Bella, Morels); 1 shallot, finely chopped; 4 green onions, chopped; 2 Tbsp chopped fresh parsley; 1 tsp chopped fresh thyme; 1/4 tsp salt; 1/4 tsp pepper; 3/4 cup dry bread crumbs; 2 Tbsp canola oil; 1 can (14oz) low-sodium crushed tomatoes; 1 Tbsp balsamic vinegar; 1-1/2 lb Cod fillets (or other white fish fillet, such as halibut, haddock or tilapia), about 4 oz each