How To Read Fish Finder Screen

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The fish finder is undoubtedly most useful fishing gear used by the fishermen in productive fishing. However, to get the highest benefit from this device you should know how to read Fishfinder screen. This article focuses on some easy steps to read a Fishfinder screen.

1.     Know the Direction of Reading

When you see the reading on the screen of your fish finder, you need to keep in mind that the reflection of SONAR will be displayed from the right to left. Therefore, you will see the latest reading on the screen's right direction. Thus, when your fishing boat is on moving, you can easily read the location from the right direction. The SONAR reflection on the screen's rightmost position, indicates the area that your fishing boat just crossed. However, reading on the Fishfinder's screen can become tricky, if your fishing boat does not move and remain still in one position. Surprisingly, when the boat does not move and remains still in one position, the SONAR does not stop it's moving; rather it continuously moves from the right to left direction. Interestingly, in this case, the SONAR will show the same reading repeatedly.

2.     Read the Water-Depth & Water-Temperature

The above image shows a Fishfinder of Hummungbird's PiranhaMax 190c model. This model has been classified as a basic level Fishfinder.

On the above Fishfinder, you can see two couples of numbers have appeared on the upper left side of the screen. The right most reading indicates the depth of water, and the next reading shows the temperature of the layer of water under your fishing boat. However, all Fishfinder models might not show the temperature. It only views temperature on the Fishfinder's screen, if it includes a temperature readable sensor. Some models can also show the reading of boat speed or how fast the fishing boat is moving across the water surface. However, all Fishfinder does not offer this feature.

3.     Read the Soft & Hard Bottom

When your fishing boat is moving across the water, then you will see a red-colored  wavy line has been appeared on the Fishfinder's screen. This red line indicates the vast surface of the water body through which you are passing on. When you see  that red-colored  thick wavy line, you will also find a green layer beneath it. This green layer indicates that beneath the water surface, there is a soft bottom. When the SONAR waves penetrate the deep layers of water and get recoiled from the bottom space, you will see the green layer on the Fishfinder's screen. A soft bottom causes the SONAR waves to recoil slowly. However, if the screen of the Fishfinder views only the red-colored  thick wavy line without any trace of green, then you need to understand that there is certainly a hard bottom space beneath your fishing boat's current position.

4.     Read the Position of Underwater Structure

However, in some cases, you might see that the green readings are visible in the midst of the red-colored  wavy line. Then, you need to understand that the reading is indicating the position of any structure beneath the water and close to the bottom space. Generally, schools of fish love to hover around certain structures. Therefore, this is a prospective fishing point, where you can set baits to catch fish. Moreover, if the Fishfinder's screen views arches over that structure, then it certainly indicates the position of many large fishes.

The above image shows a Fishfinder of Hummungbird's 398ci Side imaging model. This model bears some advanced-level  features along with the transom mount type transducer technology. This model shows the side images using the transom mount type transducer feature. Additionally, you can find the reading of water-depth beneath your fishing boat on the upper left corner of the Fishfinder's screen. This model can also view the reading of water temperature as well as water speed.

You might notice that the reflected images are clearer than the images delivered on the previous basic Fishfinder model. This happened because, the later Fishfinder model has applied a higher level frequency.

Since the Fishfinder takes the view of the sideways, the line passing through the middle position of the screen indicates the water surface. If you apply the above Fishfinder model's color scheme, the dark blue colored layers appearing on both sides of the middle line indicate the water level. You will also see a purple colored shade that indicates the bottom space beneath the water. However, the color depends on the model of the Fishfinder.

5.     Read the Position of the Underwater Trees

If you take a glance at the Fishfinder's screen (figure 2) more closely, you might see a variety of treelike objects on the left part of the screen. Those trees are located just beneath your fishing boat at water-depth showed on the screen reading. Sometimes, you might see some shadows.

Furthermore, if you again take a closer on the Fishfinder's monitor, you might see a range of tiny dots spread through the purple colored layer. These are schools of fish. Now, you can guess that as the spots are very small, they might be bait fish, and the larger fish might be found within a short distance. Therefore, you are going on the right track. However, the smaller dots might also indicate the debris left from different under-water structures or other floating objects through the water layers.

However, if you place the two Fishfinder models (figure 1 and figure 2) side by side, then you will notice some differences. Because, the features of these two models are different. Therefore, follow the manual of Fishfinder to know the on-screen features of your model. 

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