Fish Farms

Fish Health Advisories

From time to time, the Animal Health Division issues advisories to fish farmers and anglers about fish diseases that have been found in Wisconsin or other states. The advisories explain the disease, list where it has been found, and advise farmers and anglers what to do to prevent the disease or if they suspect they have found it.

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Viral Hemorrhagic Septicemia - 4 page PDF
This fish health advisory has the latest information regarding Viral Hemorrhagic Septicemia (VHS) and susceptible species from the Division of Animal Health.

USDA Amends Viral Hemorrhagic Septicemia-Susceptible Species List - 1 page PDF
This announcement was issued November 8 and adds to the list of VHS susceptible species.

Heterosporis - 2 page PDF
This microscopic parasite has been found in yellow perch and/or walleye caught in Wisconsin's Eagle River Chain of Lakes and Robinson Lake, and in three northern Minnesota lakes: Leech Lake, Lake Winnibigoshish, and Lake Vermilion.

Largemouth Bass Virus - 2 page PDF
Here in Wisconsin, we have not seen this virus, which damages the fish's swim bladder and may be fatal. However, it has been found in 16 other states, including Michigan, Indiana and Illinois.

Whirling Disease- 2 page PDF
Whirling disease is caused by a parasite that enters trout and salmon, causing skeletal deformities, loss of equilibrium, whirling swimming pattern, and death. It's been found in 22 states, but is not known to be present in Wisconsin.

For additional information contact 608-224-4887 or email e-mail beverly.simonds@wisconsin.gov.