How to Read a Fish Finder Screen? – A Guide to Understand Basics

By Wade Johnson

How to Read a Fish Finder ScreenIn the last couple of years, fishfinder technology has become quite accurate, now it is a much more useful device for exploring underwater topography and locating fish grounds, such as underwater structures or drop-offs such as sunken trees, mounds, or even wrecks. In addition, it also allows users to identify schools of fish with great precision.

If new to the fishing game, there are a few issues that you might face in the initial phase of learning a fishing game, understanding the basic readings of a fish finder in a correct way is the most common one among them. If you really want to become successful in the fishing arena, you must learn the best strategy. Before that what you need the most is a fish finder. Yes, exactly, a fish finder that will provide you ease in angling.

Back then, the anglers had to be very careful in order to catch fish from their boats. Now, With better and advanced technology, fish finders have changed the way people used to fish. It just not only helps you to find the exact fishing areas but also facilitates you in getting a large number of fish.

How to Read a Fish Finder?

You would go through some important information in this article that would help you in understanding how to read a fish finder.

An overview of Important components of a fish finder

After advanced technological amendments in a fish finder, it has now become a quite useful device that is widely used to make a fishing experience enjoyable. The issue is that it’s not that simple when it comes to reading a fish finder correctly.

Although reading a fish finder is not an easy job, it has become quite popular in the past few years. It never matters whether your fish finder is an expensive one or inexpensive until you have a grip over the skills that are required to understand the information displayed on the screen.

The first thing that you need to know is that almost all the fish finders work with SONAR technology, which is the latest innovation. It would be considered wise to have proper knowledge of important components of the fish finder screen before you start your fishing journey.

  • Display

You start with setting up your fishfinder in order to move comfortably around your fishing areas. Display which is under 4″ to 10″ is considered ideal for a fish finder screen as it larger screens provide more information. So you must choose the display in accordance with the requirements of your fishing. After you are comfortable and satisfied with the size of the screen, the next step is to find out a comfortable speed.

  • Fish ID technology

In order to learn how to read a fish finder, It is necessary to have in-depth knowledge of the Fish ID technology. This Fish ID technology is usually used in changing the raw data into a less complicated interface, which is much easier and convenient to use. It will help in showing fish icons around the fishing areas. Plus, the size of the image depends on the size of the fish identified by the device.

  • Colour

Usually, there are two types of fish finders that you will probably see in the market, including the colour and grayscale fish finders. Greyscale fish finders are also named white fish finders. The colour depends heavily on the strength of the echo received by the transducer.

The hardness of the underwater objects and the density of the water also play an integral role in determining the echo strength. When you notice a darker colour on the fish finder screen, it means that the echo is powerful.

How to properly read a fish finder?

  • Read the screen properly

A good fish finder always provides you ease in observing the bottom structure as well as enables you to know about the place where you can find a large school of fish. SONAR technology is behind the whole game which is used to make an image in the water, and in return, you will get a little bottom coverage.  Try to learn a few tricks to read the screen correctly, even if you fail to see the best results from the SONAR coverage.

  • Learn how to identify fish with Fish ID technology

In the initial phase, you must focus on learning how to identify and detect fish. In most fish finders you would find a Fish ID technology which is used to locate dense fishing areas. This advanced technology allows the raw data to be converted into a simple and readable user interface that enables you to understand what is underneath your boat.

  • Determine the fish size

In most cases, more prominent arches indicate a bigger fish, but it is important to know about this in more detail. There are multiple other factors like lengths, thickness, etc. that play a significant role in determining the fish size.

  • Try to identify different underwater structures

If you have a proper and correct understanding of the marine structures, you can mark dense fishing areas with ease. It comes with a depth finder, which is surely considered an excellent feature of a fish finder.

The depth finder not only indicates the depth of the water but also provide information about the water temperature. Also, Don’t forget to maintain a low speed to get an appropriate view of the bottom surface.

  • Underwater vegetation

Many of the experienced anglers always look for the weeds and vegetation underwater, because this type of area usually attracts a lot of fish. if you encounter an area full of vegetation, the fish finder screen will start showing vertical lines on the screen.


The fish finder has surely become a very useful device that helps fishers and anglers to catch fish without much inconvenience. This device not only increases the chances of better fishing but also ensures a refreshing and enjoyable fishing experience.

if you master the fish finder screen reading in an accurate way, it will definitely help you to become an experienced angler. just learn and practice with your model to shapen skills.

Wade Johnson
Latest posts by Wade Johnson (see all)