I usually go to Exotic pets at Topanga cyn. and Lassen. They have an interesting selection and there is always something new there. They have a good variety of cichlids and a huge display tank with adult CA/SA. The only problem is the prices can be a bit high. They had 4" festae but they were really expensive, $50 each.
The other place I go is Aquarium city, they're on Sherman way between Canoga and Topanga cyn. It's kind of a gamble but they usually have something interesting there. Not very knowledgeable though, told me I could keep a tiger shovelnose cat in a 55 gallon. Lol.