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In that video of CA, he says that the fish by him turned on from 1013-1007 millibars. Thats a difference of .087psi.
A fish would have to move down 3 inches in the water column to feel the same change. I’m just not sure how that, in and of itself, elicits a change in behavior. Maybe it impacts fish that primarily live in shallower water year round a bit more but I think the most likely thing impacting fish is all of the other variable changes that come with changes in pressure.
