aquatic critter on nolensville pike is a good one, but I havent been there in a year or so. Fins of franklin is also a good one, especially for saltwater, its in franklin a few minutes, 15-30 depending on traffic, south of nashville on franklin road. There are a bunch of mom and pops around there that range from so-so to pretty good, I dont remember the names or addresses, I live about an hour south of nashville and havent made the fish store tour up there in awhile.