10-09-2010, 06:50 AM
From my understanding it is the larval stage of the flatworm parasite that causes swimmers (duck) itch. When the water warms the larva leave the snails and are looking for a new host - ducks. They mistakenly infect other animals and fish but soon die off. This should go away with the cooling temperatures. They claim there is no harm eating the fish unless there are infections (black spots in the meat) caused by the parasite. I choose not to eat them myself.
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