On plate, stir together flour, cornmeal, chili powder, salt and pepper.
Coat perch with flour mixture.
Heat butter in 10-inch nonstick skillet.
Add perch and cook over medium heat or until browned on both sides and white in the center, allowing 3 minutes per side.
JALAPENO-BUTTER SAUCE
Melt butter in small pan. Add chili and shallot sauteed of medium heat for 3 minutes or until shallot is tender. Add tarragon and 1 tsp. of lime juice. Taste. Season with salt and pepper. If sauce is slightly tart, add remaining 1 tsp. lime juice. Serve immediately.