Becky, you could try just having no fish. Use mosquito dunks in the water to keep the skeeters from breeding. Then you could grow your water lilies happily.
Just my opinion, but a pond that size only needs about 5 fish in it to keep skeeters at bay. Maybe the raccoons went after the fish because there were so many? My pond is 4ft. x 12ft x 2ft deep, and I have 6 or 8 goldfish in it at any given time. Never ever have I seen a single mosquito larva.
When your fish proliferate, scoop them out and 'distribute' them in the ditch or local drainage. Or give them to your neighbors? If they are the little black gambusias, they are native so not a problem for the environment, and they'll help reduce the skeeter population even more if you populate your local waterways with them.
