The Best Sonar Fish Finder to Buy in 2019

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Fishfinder comes with varying features and attributes to make the job of common fishermen easier. Sonar fish finders have served fishermen and hobbyists. Due to the continuous development of these sonar fish finders, the technology has come up with a wide range of useful options to allow them to find suitable fishing spots easily.

For this reason, people may feel a little bit confused when they have to select between the varying features, frequencies and power capabilities of fish finders. To help you guys we have compiled some useful points and helpful sonar fish finder reviews so that you may find the best sonar fish finder in no time.

Our Top Choices

Deeper Smart Sonar PRO
Deeper Smart Sonar PRO
Humminbird HELIX 5 CHIRP GPS G2 Fishfinder
Humminbird HELIX 5 CHIRP GPS G2 Fishfinder


Fish Finder

Editor Rating



Deeper Smart Sonar PRO

2.55 x 2.55 x 2.55 in

Interior Portable Fishfinder with Wired Sonar Sensor Transducer

2.2 x 9.6 x 5.9 in

Lowrance 000-12635 -3X Sonar, W/ 83/200 XDCR

3.8 x 1.9 x 6.5 inches

Humminbird HELIX 5 CHIRP GPS G2 Fishfinder

1.1 x 7.5 x 4.3

FISHINGSIR Wireless Portable Fishfinder with Sonar Sensor

9.4 x 3.1 x 4.7

The word Sonar stands for Sound navigation and ranging whereas it used sound waves to detect objects or echolocate the things in a specific area. We can say that the gadgets help in finding fishes easily by using the various frequencies of sound waves.

Why Should you buy a Sonar Fish Finder?

A sonar fish finder is always one of the best options when you are in need of finding fish in the water whether it be salt water or fresh water, very deep fishing zone or in shallow water, it helps in all conditions.

Sonar technology in the fish finders helps a lot to locate, mark and reach out the areas which have a high probability to find existing fishes.

Due to the fact, with the help of the different frequencies of the sound waves the fish finders which are equipped with high power sonar are capable of providing a clear view of what is there beneath the boat and its sides. It gives a complete picture of the underwater environment by showing the fish location without blurring issues.

Such fish finder may help you in the following ways:

  • It provides a clear picture or the image of the whole area below the boat and its sides.
  • These gadgets make you capable of finding fish and locate their proper position so that you never miss out your target.
  • Sonar fish finders are helpful in shallow water, fresh water, deep water or salt water conditions depending upon the kind of sonar fish finder you have with you.
  • Fishfinders with high power sonar make sure to scan and provide images that will give you detailed information without missing anything that is there.
  • You can find low, medium or high range frequency sonar fish finders to match with the conditions in which you are going to catch up fishes. Though, CHIRP and variable frequency fishfinders help a lot in managing the varying needs by providing variable frequency ranges as per your needs.

Types of Sonar Fish Finder

Despite the fact that sonar fish finders work on the same principle and uses the same basic technology, a little twist in the way the frequencies are being used in the variously advanced fish finders allows providing different systems using the frequencies in various ways for better imaging and range enhancement.

The main type of sonar fish finders you can find on the market are:

Traditional Sonar Fish Finder

Traditional sonar fish finders are the ones which offer sound frequency waves that consist of one type of frequencies instead of multiple types or ranges. This works fine when you have to target the fishes in a small area where you are familiar with the range and depth you are going to cover. The sonar fish finders with 50 kHz sound frequencies give maximum penetration but has lesser power and may not be able to provide detail. In contrast to this, you can expect better imagery when you are using the high-frequency waves of about 200 kHz but lesser penetration.

These traditional sonar fish finders may only offer a single type of frequency waves or some advanced versions may offer adjustability and multiple frequency options in some cases.

Down Imaging Sonar Fish Finder

Down imaging fish finder are able to each deep water bodies and give a clear image of what is found below. These kinds of fish finders are meant to be used in salt water and deep areas. They offer a wide range of frequency options depending on the kind of sonar fish finder you have.

Side Imaging Sonar Fish Finder

Side imaging sonar fish finder uses the sonar waves to get the whole picture of the sides as well and are good to use in shallow areas. This helps in managing the surroundings in the shallow waters to locate fish and possible hindrances as well. These are also names as SI fish finders.

CHIRP Fish Finder

CHIRP technology has revolutionized the way sonar fish finders work. Instead of using a single selected frequency of sound waves, CHIRP offers continuous sound waves of varying frequencies to get the message back, so that the whole area along with all the details is covered perfectly. This helps in getting detailed and high-quality imagery that lets the user find fishes more easily and get an idea of the environment below. There is no blur nor hindrance and no possible blockage of images when your fish finder has the CHIRP technology in it.

Sonar Combo Fish Finder

Some sonar fish finders come in combination with the GPS fish finders as well. Some may offer multiple frequency waves for better area coverage and detailed imagery. Such fish finders are good to use when you have planned to fish around in various areas with variable underwater conditions.

Features to Look for in Sonar Fish Finders

When you are going to buy a sonar fish finder whether you need a combo or you are looking for sonar fish finder with side imaging capabilities, you have to make sure to look for the following features:

The Frequency Waves the Fish Finder

The type of frequency waves which the fish finder is capable to provide is one of the most important things you need to focus on when deciding on the one you are going to buy. You should know which frequencies would work in the areas you have planned to go for fishing. On the basis of that, you might have to select what you need.

The Power of the Fish Finder

The more power the better image you will get and the better would be the performance of your fish finder. So it better to get the desired power for better results.

Customization and Multiple Options

Most of the sonar fish finders that offer variable frequency options for you to select from always work better for regular fishermen.

Presence of the Latest CHIRP technology

The latest CHIRP technology is one of the basic things that you must not miss out. As a fact having CHIRP in your fish finder helps a lot in getting better targets.

Top 5 Best Soar Fish Finder

Here is a quick preview of our top 5:

Here is a comprehensive review of five of the best sonar fish finders that are available on the market

#1. Deeper Smart Sonar PRO

Deeper smart sonar pro is one of the most reliable trustworthy fish finders that comes with easy to use functions and offer customized functions for better results. The Wi-Fir connected system ensures that you can use it with freedom and may reach out narrow places without any restrictions. This is a portable fish finder that does not need a cellular data. Rather it connects to your smart devices and gives the best imaging experience. This device comes totally compatible with Android and Apple devices so you don’t have to worry about compatibility issues.

The deeper sonar fish finder can be used in shallow water, ice-fishing, kayak fishing, freshwater fishing and saltwater fishing. This is one of the best sonar fish finders that has GPS and offers onshore mapping for better imaging and target reach out. The map can be created and analyzed easily using the app Lakebook on your PC.

The portable sonar fish finder ranges 330ft in water and can mark anything that has the approx. size around .5 inches. Within 260 feet. This also ensures that you will get all the real-time information about the underwater conditions without any delay.

You may get the target location for fishes you need to catch up, the contours, depth and temperature and vegetation find within the range.


  • Portable
  • Useful for variable water conditions
  • Wi-fi enabled, wireless
  • Easy to use
  • Compatible with iOS, Android
  • Depth range 260ft to 330ft
  • Inshore mapping
  • Lakebook compatible with map analysis

 #2. Interior Portable Fishfinder with Wired Sonar Sensor Transducer

Venterior sonar fishfinder comes with wired sonar sensor transducer and gives a precise version of underwater imagery so that you get to your target easily. It helps in detecting the depth and fish location underwater, and display the images in a clear way.

This also gives enough information about short and tall weeds in water, sand and rocks and the whole seabed so that you know the area better.

It is easy to use in a wide range of conditions whether you are about to launch your fishing line in a river or I shallow water, you can use this fish finder in lake or river or anywhere you need. 

The round shaped transducer comes up with the 25 ft cable that allows the user to let it reach places from where the images are required.

The depth range is approximately 3ft to 328 feet and works with any kind of water environment. The transducer is capable of floating on water and works with ice fishing as well.

In addition to these physical features, the functional features include five different selectable levels for the sensitivity of the transducer. There is a fish alarm, backlight, and water depth measure into feet and meters to help you understand the conditions better. It also has internal energy saving mode.


  • Wired transducer with 25 feet wire
  • Floating transducer
  • 1-year warranty
  • Fish alarm
  • Five sensitivity levels
  • Suitable for wide range of water conditions

 #3. Lowrance 000-12635 -3X Sonar, W/ 83/200 XDCR

Lowrence Sonar fishfinder features 3-inch color display for easier and better image analysis. The led backlight and 320x 240 image resolution on the display screen ensure better viewing and comprehension of the provided images. It helps in seeing the images in full sunlight. The transducer emits broadband sounds for capturing details easily. It helps in identifying the targets easily and also provide contour details, hardness and temperature as well.

The advanced signals and processing features help to adjust the settings so that you can see the fish structure and all the underwater details easily. The dual frequency transducer ranging about 83 kHz and 200 kHz make sure that the view is crisp and easy to understand. 83 kHz sound waves make sure to provide 60-degree cone for searching large areas under water.


  • Dual frequency sonar
  • 60-degree conical coverage
  • 320x240 image resolution
  • Contour, hardness, vegetation and fish arches imagery

 #4. Humminbird HELIX 5 CHIRP GPS G2 Fishfinder

Humminbird Helix features the latest CHIRP technology ensuring the combo setup with GPS and sonar technology. The wide and clear, five-inch color display help in providing large images and clear pictures for underwater conditions. The CHIRP PLUS sonar beam make sure to give each and every detail for easy condition analysis.

GPS function helps in chart plotting and anima cartography help in precise image details. Waypoint saving an additional memory card also help for saving maps and other details on the amp.

The sharp colored 800x480 display with backlight provides easy view images. The CHIRP dual beam is supported by 4000watt power output for better and more powerful beam and sharp imagery.


  • CHIRP technology
  • Dural beam
  • Powerful action with 4000watts ptp
  • Sharp images
  • Broad display

 #5. FISHINGSIR Wireless Portable Fishfinder with Sonar Sensor

Fishingsir wireless portable sonar fish finder is another option if you are looking for sonar finders. This portable fish finder is perfect for beginners because it offers easy to sue operations and perfect support for new fishermen.

It also works fine for expert anglers and helps in locating fish in an easy way with the help of sensitive sonar sensor that works wirelessly and gives accurate imager. The 2.8 inches widescreen display, 512 color LCD, and sunlight readable feature ensures easy reading and image analysis no matter at which angle you have held the fish finder.

The unit is rugged and provides stable performance with persistent features no matter where you use it. The test depth ranges up to 135 feet. The 2.4 GHz frequency waves ensure that the sonar operates up to the distance range around 328 feet. It is perfect to use within kayaks, boats, and canoes.

This one also comes up with temperature and pressure seniors and identify fish to find the location in a precise manner.


  • Sonar technology
  • 2.4 GHz frequency waves
  • Sunlight readable
  • Perfect for beginners and experts
  • 2.8 widescreen
  • 512 colors
  • Suitable for shallow water
  • Perfect for use in kayaks, canoes


If you want the best sonar fish finder for your sporting activities in deep seas or
for catching loads of fishes then there are a few points that you need to know.
The best way to know about sonar fish finders is to take note of the frequently
asked questions given below.

Q: What type of sonar fish finder is most suitable?

A: This depends upon your purpose of catching fishes and whether you are likely to remain in shallow waters or go deep. In case of shallow water fishing a higher frequency sonar fish finder is all right for you, but if you wish to go into deep waters then lower frequency gives better return.

Q: Can sonar fish finder be used in rough seas or only in calmer waters?

A: Rough seas or disturbances caused by wake due to another boat or ship passing by may create numerous bubbles such that sounds would deflect in every direction making it almost impossible to locate shoals of fishes. Hence, calmer water is always better.

Q: Is it possible to detect the type of fishes through sonar returns?

A: Yes, this is quite possible. However, you need experience and skill coming out of regular practice.

Q: Which is better auto mode fish finder or manually operated one?

A: If you have no experience then it is better to go for auto mode that requires some manual adjustments too. Fully auto mode ones are expensive and the manual ones are better for only experienced hands.

Q: Is side imaging sonar fish finder better?

A: Technology has made immense leap and there are good brands that are available in the market. You may also get better view of the deep sea with side imaging at 180 degrees during scanning. Usually best sonar fish finders can scan 240 feet to the left and right.

Here we have discussed some of the bests sonar fish finders which provide high-frequency waves and multiple frequencies that offer a wide range of imagery options. Sonar fish finders are great for use underwater when you need stable and clear images and have to find fish with the exact location.

It also works fine in combination with the GPS function to offer a customized solution to fishing needs. Though Deeper and hummingbird sonar fish finder have been found ad the best among these sonar fish finders other ones like FishingSir and Lowrence also work well in a wide range of underwater conditions.

I am an avid outdoorsman with experience in naturalist education, outside adventure education, ski instruction, and writing. In addition to my outdoor hobbies, I started this blog to provide advanced material, guiding you towards a better and more comfortable outdoor experience. I enjoy sharing my experiences of backcountry education teaching and guiding through writing. To contact Davis, visit the contact page. and About Us.