Mosquitoes are often controlled in fishless ponds by predatory aquatic invertebrates like insects. Gambusia (mosquito fish) are often added for mosquito control, but they have a reputation as egg-eaters, so consider carefully if you want them in your main pond. You live in a very different climate from me, so there may be better choices in your area. I rarely see any mosquito larvae in my wetlands, but we have plenty coming out of tree holes and small puddles that appear for a few weeks during warm wet periods. Two years ago, early archery was terrible.
