Petco, Baton Rouge
6857 Siegen Lane, Baton Rouge, LA 70809
Yep, it's a chain store. Still worth checking out if you're in the area.
This store had some truly nasty tanks when it first opened, but quality has been improving steadily since, and when I visited yesterday the tanks looked great.
There's a few things that make this store stand out:
1) They always seem to have a few fish species that are not commonly found in chain stores. For example, I've seen rasbora axelrodi, glofish, cardinal tetra, and Endler's. The uncommon species seem to rotate, so I tend to drop by periodically to see what they have even if I'm not looking for anything in particular.
2) Most employees have been there a long time, and are friendly and helpful. The people in the fish section actually know fish. I asked one yesterday about their water parameters and he actually knew the exact concentration of the salt in the freshwater tanks!
3) They're able to special-order fish and plants from their vendor and have them delivered in-store for you. Some other chain stores will do this, but not all. I've never done this, but I assume if they can bundle your request with their regular restock order, it would save you a lot on shipping.