re: Possibly opening a seafood market in BR.

A high end seafood market would be highly successful in south BR. There are no truly upscale/high end seafood markets anywhere in Baton Rouge (assuming you don't count high end grocery stores like Whole Foods and Fresh Market that have a seafood counter), and one anywhere in Baton Rouge -- especially south Baton Rouge -- would print money.

As others have mentioned, specialize in salt water fish. Make sure you sell a good variety of the high end fish that can be hard to find in BR, like Chilean sea bass, halibut, etc. A wide variety of high end shell fish should also be a given, including some somewhat hard to find things like dungeness crab.

Someone else mentioned a variety of oysters with tags showing where they are from. This is a great idea. For example, sell some of the exotic/high end oysters varieties from the pacific northwest.

Probably more than any other food product, people want to know that the seafood they buy is fresh and high quality. When people visit seafood markets with a high end/upscale atmosphere, that sell the types of high end seafood that I've listed above, people assume that the seafood they are purchasing is fresh and of high quality. Therefore the first person who opens a truly high end/upscale seafood market in Baton Rouge will make a lot of money.