Mosquito larvae is part of the fish's' natural diet. It is also the easiest live food option to culture.
All that is needed is a container or bucket of water, placed outside, preferably in the shade. Late spring, summer, and early fall conditions are required, since live mosquitoes need to be available in order to provide the eggs. The larvae can be frozen in ice cubes for feeding during off seasons.
The larvae feed on bacteria. In order to provide them with a food source fill a nylon bag full of kitchen and garden waste (fruits, potato skins, old bread, grass, leaves, whatever comes to mind) and place it into the bucket. This will stagnate the water and attract the mosquitoes, the "smellier" the better. In about 2-3 weeks the first larvae can be harvested.
Visible little clusters similar to little pieces of charcoal (clamped together eggs) are the first signs of a successful colony. As soon as the larvae hovers head down just below the water surface harvesting can commence.
The easiest way to harvest the larvae is to remove the nylon bag and strain the water through a fine net. This will also eliminate any chances for possible survivors growing into maturity. The water can of course be re-used for the next batch.
It is advisable to rinse the larvae with fresh water in order to eliminate any potential contaminants.
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