Toms in Long Beach is very high on my list of favorite lfs. Pet kingdom in SD is probably my favorite store, I don't get to visit often as i live in LA but when I do head down there I always stop. Some other stores to check out in LA would be Jims Exotic Fish (usually a pretty average stock), Alans aquarium (they get a good amount of donations so you run into some cool fish), fish and pets utopia, Apex Aquarium (hate this place because of the staff, except for the hippy guy), Theres two tongs, one if LA and one in Fountain Valley but they are both very nice stores, Nature aquarium and lastly I would check out oranda aquarium, they have high prices but i have seen some rare fish in there. All the other stores you find on google are pretty crappy imo, for example Fumis tropical fish had the most disgusting tanks I've ever seen. Store preference depends on what you like, these are the stores I like.