Easy there... It has as much relevance as does yours. The op has a wrasse with ich. You discussed points of ich treatment methods as did others as did I... Certain wrasses can be fragile, others are extremely hardy. Most people accept that certain species are sensitive to copper and that the two ways to handle that are to take a few extra days to get to treatment level and be very cautious not to exceed recommended dosages, or to do TTM. To warn that TTM could cause issues with the wrasse is counterproductive to the OP as it's widely considered, the least stressful method of eliminating ich as long as proper protocol is followed (which it should be wether it's a wrasse or a damsel). If I had a sensitive species of wrasse such as a leopard wrasse, it would be what I would use instead of copper. And for what it's worth, most people mean cupramine now when they speak of Copper treatment which has less sensitivity issues, even though people still use the same knowledge base of sensitive fish.
OP. What kind of wrasse do you have?
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