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Posts: 132
| What is the highest Barometer you have ever caught/seen fish at. I don't mean fishing all day with just one follow, I mean consistently have seen fish at what levels. For example last year I never saw a fish after the barometer reached 30.3 or higher. |
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Posts: 676
Location: Wisconsin | Not a factor. Need to change your presentation. |
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| If its not a factor, what reason would he have to change his presentation?
Can't say I've ever actually paid much attention to what the Hg was doing on any particular day, specific to what reading it was at. I look at general trends and try to fish before a storm or just after when the pressure is about to or is still dropping.
The GLS fish I go after mostly now don't seem to really care about the barometer so much, that I can tell. Weather really doesn't bother them that I've noticed. They seem much more affected by water clarity/temps, current levels and tidal water movements, and to a certain extent moon phase, especially as it relates to the above two. Not noticed much of an uptick or downward trend in angling relating to barometer.
Inland fish, however, are a very different animal in this regard. |
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Posts: 8797
| I've only paid passing attention to barometer readings over the past few years. But it seems to me it's not the barometric pressure that is a factor in fish activity as much as it is the MOVEMENT of that pressure. If the barometer is moving, seems the fish are too. |
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Posts: 175
Location: Tonka, MN | esoxaddict - 4/13/2012 9:52 PM
I've only paid passing attention to barometer readings over the past few years. But it seems to me it's not the barometric pressure that is a factor in fish activity as much as it is the MOVEMENT of that pressure. If the barometer is moving, seems the fish are too.
Agreed |
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Posts: 676
Location: Wisconsin | From an article...."Other factors besides water temperature can be involved, of course. Light intensity—due to wave action, cloud cover or water clarity—can have a huge impact on the feeding behavior of species like bass and walleyes. And as many NAFC members know well, the amount of light passing through the water can also affect how baitfish and predators position themselves in relation to cover or structure. “When conditions are right (such as when the water is clear and warm), cloud cover can pull fish into the shallows,” Hugill says."
In-Fisherman
Weather Effects In-Fisherman researcher Ralph Manns downplays the direct effect of barometric pressure on fish behavior. “A fish with a gas bladder needs only to swim up or down a foot or two to experience as great or greater a pressure change as that created by all but the largest natural pressure changes—say, a hurricane. “A fish might notice itself floating or sinking a few inches in response to a change in air pressure, but it experiences larger pressure changes as it shifts depth several feet while hunting prey, escaping predators, or changing location.
“Black bass and other species with closed gas bladders use their bladders to achieve neutral density and thereby hold at constant depths. This weightlessness conserves energy by reducing the need to swim to hold position. If air pressure or depth changes, a fish with a gas bladder slowly and naturally adjusts bladder pressure to re-establish equilibrium.”
Weather expert Irvin Decker adds, “Freshwater fish, including largemouth bass and crappies, shift depths from the surface to 15 feet or more in their feeding activities. This difference in depth represents a pressure change many times greater than the maximum barometric pressure change ever recorded on earth. “I believe that barometric pressure changes associated with fronts bring with them secondary effects—wind, thunderstorms, cloud cover, changes in temperatures, and changes in light intensity—that do affect fishing success. Actual pressure changes alone do not have any direct effect on fishing, as is so often stated.”
Manns concludes: “Biologists have never identified physical mechanisms or sensory systems that would specifically allow fish suspended at neutral density to sense relatively small changes in water pressure associated with barometric pressure shifts. Biologists have, however, long postulated that clouds, waves, and changes in lighting affect hunting success by predators, by favoring species with eyes sensitive to low light levels, such as crappies.”
Research into bioenergetics suggests that fish conserve energy by not foraging when their likelihood of success is reduced, then begin actively feeding when conditions are more promising. How they know this remains unstudied.
http://midcurrent.com/science/the-pressure-myth/
What is being said is that a fish, living in a fluid, can't feel air pressure changes. Even if they could, A.) Why would they care as an advantage over prey, and B.) the minute changes would make little difference to them.
Yes, Barometric factors can and do relate to is changing light conditions. But not always. Fronts are identified by changing wind patterns and temperature, NOT a pressure change. I would focus on what the sky is doing on the water to direct presentation methods, or weather forecasts on what the conditions are going to do. You could use a isobar graph to find out how the wind is going to set up for the day, a factor for fishing walleyes or current.
If you took the barometer out of the equation and looked at fishing patterns you will most likely find that it was a presentation match to the light conditions.
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| I never checked. All that hardcore passion for how and why takes all the fun out of it for me |
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