Complete elimination of all fish is also recommended when undesirable fish are in the pond. Draining the pond will allow you to save the desirable fish. Some ponds are constructed with a drain. Others may be siphoned using sections of fire hose, or they may be pumped down with a high-capacity pump such as that used for irrigation. Commercially available fish toxicants contain complete directions on the label for total population elimination.
Rotenone is a common ingredient in fish toxicants.
Read and follow label directions for proper use of fish toxicants. Rotenone is a restricted-use pesticide. You must be licensed to purchase and use it. The information provided here is intended to clarify and supplement that which is found on the product label. Small ponds may be treated entirely from the shoreline.