Mosquito Control in Fish Ponds

Prevent or Reduce Mosquito Production in Fish Ponds

mosquito sucking blood


Female mosquitoes will seek sheltered areas in any pond to lay their eggs.

Areas such as water trapped in the top of planter pots, water in gravel or between rocks, algae mats or thick emergent aquatic plants and areas sheltered by overhanging plants, provide protection against predators (fish and insect).

By managing these areas to minimize opportunities for the mosquitoes you can prevent a new generation from hatching in your pond.



Mosquito Control Guidelines for Fish Ponds

Pond Removal

If you have a fish pond you no longer want, it may be permanently removed to prevent mosquito problems.  Neglected fish ponds are a problem for you and your neighbours. If you are going to remove your pond, or fill it with soil; the goal is to have no standing water.

Provide for complete drainage

  • Problems may be prevented by breaking large holes in the bottom or removing the bottom.
  • Pond drainage is successful if water does not stand for more than a few days. Check after a rain to be sure drainage is sufficient to remove all the rainwater.

Fill the pond with soil

  • Provide drainage as above, then fill the pond with good soil and landscape it.
  • If you want to grow plants that prefer continuously wet soils, leave pond intact and fill with soil. Use plants preferring these wet, sour soil conditions. Consult a horticulturist at your local nursery for advice.
  • Allow for shrinkage of the soil and fill above the edges of the pond so that water will not stand on surface.
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