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Originally Posted by jeffrey929
Not so sure if the photo is an actual photo.. and if you look at the caption above, species that can gulp or burp air.. trout, salmon, carp
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It is...
They can adjust their air bladders but that doesn't mean they don't still suffer from barotrauma.
Here is a report from Wisconsin government that comments on the subject.
https://dnr.wi.gov/topic/fishing/doc...gMortality.pdf
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Furthermore, barotrauma has been a concern, as most Lake Trout are brought up from deep water and many are observed with overinflated gas bladders
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—Bloating of angler-caught Lake Trout was observed in 32.3% of Lake Superior fish and only 5.6% of fish in Lake Huron. Incidence of barotrauma was related to the depth of capture: bloating was significantly more frequent for Lake Trout caught at 50-m or greater depths in Lake Superior (Z-test: Z = −3.15, P = 0.002) and for fish caught at 40-m or greater depths in Lake Huron (Z = −4.83, P < 0.001).
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