Temperature changes only change the mood of fish. A negative mood doesn’t mean fish won’t bite, it means they won’t bite aggressive presentations.
Constant temperatures bring about aggressive presentations for that temperature period. Cold water aggressive presentations are slower than lindy rigging, and cold water negative presentations are moving 0.1 to 0.3 mph. Aggressive cold water presentations are approaching 1 mph MAX.
This week i have caught fish between 0.3 mph and 2.5 mph.
We get into 60’s and will be playing between 1 and 3 mph.
Up and UP from there, and Down and Down after that.
One can simply gauge the mood of the fish by looking at water temperature trends. If it is trending warmer or just stable, expect to use more aggressive presentations for that water temperature. If it is falling, expect to be running slower presentations. This always plays out true because fish are cold blooded and their metabolism is tied to their body temperatures. Catfish farms, people who feed and harvest catfish for a living just like those who feed and harvest cattle; have vastly documented the amount of feed necessary given the water temperature and temperature trend. (Except, cattle are warm blooded, and therefore have entirely different temperature to food intake; the point being that it is a business and it is very important to know how to feed your livestock)
Brad Duricks book Cracking the Channel Catfish Code will teach you how to react to water temperature, and flow changes, no matter the species of fish in minnesots. It isn’t a channel catfish book anymore than a sucker is a catfish bait. 2c.