Fishing report for Lake Del Valle, California. Most popular fish caught in Lake Del Valle are Striped Bass, Largemouth Bass and Smallmouth Bass. Other popular fish include Rainbow Trout, Black Crappie. The 12 fish that anglers reported catching are listed here and include description, weight and size of the fish and date caught. If you fish on Lake Del Valle please report your catch here to let other anglers know what fish are available.