How To Read A Fish Finder

A Fish Finder is also called a sounder. This is an instrument used to locate fishes under the water by deflecting reflected pulses of sound energy. The evolution of Fish Finder is as complex and fast as been the evolution of computers.

If the earlier finders are compared to that of the latest, it looks like the conversion form a computer to super-computers. Earlier, it was only a few blinking lights on a dial that has become an accurate screen-viewed image.

These images are track-sharp too. In some cases, these are able to portray fish lying about 10000 feet below the keel. The introduction of multiple new fish-finding technologies has left the savviest sonar sharpies among us.

These sharpies leave us confused against those invisible lines. Now, the advanced Fish finding technologies has been spread out the options at hand — standard sonar, imager/scanners, side-finders, and CHIRP.

These have made the concept of fish-finding an easy process. So much technicality also raise some difficulties among fisherman and here we are going to explain how to read a Fishfinder.

How Fish Finder Has Become Important

Fish Finders work on Sound Navigation and Ranging (SONAR) system. This apparatus is most effective in current fishing process and also for those look forward to fishing as a leisure activity. The location of a fish is displayed in the digital screen of such an apparatus.

The technology has been continuously upgraded since the 1990s. The current fish finders technology has been developed to include systems like the GPS, electronic compasses and radar, making the device even most reliable.

Benefits Of A Fish Finder

The Fish Finder provides a measure of exact depth from water surface to the bottom of water. The structure of terrain under including obstruction, rock, mud and moss is also ascertained. Besides, it is also an effective way in determining position of fish under water, position where fish focus or movement direction of fish under water.

Some of these apparatus are also designed with an ability to measure the temperature of water. This has become very helpful for an experienced fisherman to determine suitable skill for fishing. Backed with the information provided by fish finder, the fisherman will be able to calculate what is to be done after determining position of fish under water and avoiding the obstructions.

The Fish Finder is highly useful equipment in understanding the speed of waves. For this finding, a GPS-featured Fish Finder is required. It is also crucial to realize the turn and speed of wave to avoid hassles during fishing. In addition, such machinery can give fishermen wave alert from distance.

Fish Finders help the fishermen to save substantial time as it guide them in finding a suitable position for fishing. Thus, besides making the job easy for a fisherman, this apparatus serves effectively for saving money and efforts.

How To Read A Fish Finder

It is necessary to know the procedure of working while it is attempted to read a Fish finder. The Sound and Navigation Range waves are expelled from the transducer. The waves are seen to bounce around and return to the transducer, while this converter reads the speed, distance and rate at which the waves get back.

The transducer converts these raw data into visual data, which are thick, colored lines and arches. These lines are set at different depths. From the reading, location of a fish can be easily ascertained.

Depth Finder is one of the most common features present in most modern variety of Fish Finder. It is a depth sensor that tells the user about the depth of water below the vessel. Study of this depth will also inform about the types of fishes in the environment. The depth is normally displayed on the top left of the Fish Finder screen. The accuracy of this reading is fairer when expressed in meters.

Speed Sensor is another important attribute of a trendy Fish Finder. This quality of a finder displays the speed of movement. This function acts like that of a speedometer and these are effectively seen to be used by experienced fishermen.

Color And Echo Return Strength

Reading the fish finder results are also important. Several fish finders are in color, while many are seen in the general black and white format. Color helps to distinguish the strength of echoes that revisit the transducer. It is important to know the density and hardness of an object. Stronger echoes are displayed with stronger or darker colors.

The darkest object to encounter is the seabed or bottom of whatever body is being used. This may be represented either by a strong or a light line. Light line normally represents a clay bed, while a bold line will imply that the material on the bottom of the water is a lot harder and usually less porous.

Grabbing such ideas will naturally make one expert and smart about gathering ideas about finding fish in any water body. All the minute details are to be seriously considered. It is essential to know how to interpret and use Fish Finder in order to improve skills about finding and catching fish.


The Sound and Navigation Range Waves are normally move from right to left enabling us to see the latest reading. In course of moving, this serves uniquely as the right-most reading is just passed through.

When stationed, it serves in a tricky way, as the reading will never be stationery. Thus, same reading will be seen over and over again. Thus, in this way, a Fish Finder serves as the best way in tracking the fish at different level of water thus making the job of fishermen easy and convenient.

Hoang Bui