Spot the Temperature Trends

Spot the Temperature Trends

Why do some fly fishermen take the temperature of the water before fishing?
Bob Hickman

Mark Burdass replies: Temperature is probably one of the most influential environmental factors in determining whether the fish will be feeding.

Trout, like most fish, are cold blooded and so their body temperature is the same as the water that surrounds them. If the water temperature is very low then the fish’s metabolism will also be quite low and so has less need for food.

The exact temperature at which fish stop feeding can be variable between species and their environment. However, if an angler keeps a log of water temperatures and fish caught they can often see how the fish are affected in the specific fishery and so spot trends that give an indication of whether it’s worth having a go!

Reprinted with permission of Trout Fisherman magazine.