Mosquitofish are available at no cost for Jackson County residents
Limit 1 fish per foot length of pond or water feature, up to 25 total
JCVCD maintains two mosquitofish (Gambusia affinis) breeding ponds at our District office and provides them free of charge to Jackson County residents. These fish, similar in size and proportion to guppies, are small but voracious predators that can consume hundreds of mosquito larvae per day. They are very hardy and do well in water troughs, abandoned swimming pools, stock ponds, and ornamental fish ponds.
Restrictions on Placement
Mosquitofish are a non-native species. Oregon law (ORS 498.222) and the Oregon Department of Fish and Wildlife (ODFW) stipulates where certain non-native fish, including mosquitofish, can be placed. This is intended to mitigate negative impacts to native species. ODFW restricts the stocking of mosquitofish to “aquaria”, which is defined as self-contained waterbodies and tanks not fed or drained by natural waterways. Natural waterways include creeks, streams, sloughs, ponds, lakes and any ditches connected to them. Permanent ponds located in floodplains should also not be stocked since floodwater could allow mosquitofish to enter natural waterways.