Effects of warm and cold water

Water temperature plays a major role in the activity of the fish and to catch those fish it is important to know why everything is happening the way it is below the surface.

Most anglers, at one time or another, have heard fish are cold-blooded animals but we often wonder if some anglers really understand what that means?  Well, in a nutshell it tells us that a fish can’t control its internal body temperature the way you and I can.

If it’s winter for instance, and the water temperature is cold, say five degrees Celsius, then that’s basically what the fish’s internal body temperature is going to be as well.

Of course, the opposite is just as true at times.  If it’s the middle of summer and the water is running around 20 or 22 degrees Celsius, any fish which are swimming in this water, are going to be roughly the same temperature.

The key point we want to make then, is every single species of fish has a temperature range within which it feels most comfortable.  To simplify these ranges, biologists and anglers alike, often refer to fish as being either cold, cool or warm water species.

Knowing which category your favourite fish falls, will tell you a lot about where you’re likely going to find it throughout the changing fishing season.  And depending on the temperature of the water, you can quickly determine if the fish are likely going to be super active, or so sluggish they’re almost impossible to catch.

As you can see, the temperature of the water can play a critical role in your fishing success.  And, that is one reason why you should always think like a fish!