Welcome to the forum. Actually, there are some great places to fly fish around there. You may have to drive a little bit to get to them. The lakes in Southern California in a lot of cases have big Largemouth Bass. Always fun. About 100 miles East of L.A. is Big Bear. There are Trout in there. At least there still was last time I fished it.
You can always fish for Saltwater fish. Have a big ocean handy right there.