Top 10 Best Fish Finders 2021 – Reviews and Comparison

Fishing in new waters is always a challenge. There is a lot of trial and error in finding a good place to fish. And it can be frustrating to throw so many times and not even get a single bite. If you could see what’s under the water!

Fortunately, with a Fish Finder, you can do that! These devices help you find those elusive schools of fish while giving you a glimpse of the underwater structure. Plus, it’s also helpful to check what triggers those dormant fish, so you can change your tactics accordingly.

There are many options available, ranging from inexpensive portable devices to fish finders with GPS and mapping capabilities. Each one with its application, cons and pros. Here we offer you a complete selection of the best probes available on the market.

Here are the 10 Best Fish Finders in India.

Let’s take a look at the Best Fish Finders!

Finding the best was next up on our list of challenges. After several hours of testing, we decided on a few models that we think are suited.

Here are the Top 10 & Best Fish Finders in India in 2021

SaleBestseller No. 1
UJEAVETTE Underwater Fish Finder Lamp LED Submersible Fishing Light for Catching Fish Green Light
  • Powerful Fishing Light: LED fishing light,12V, 13watts, has 126 LEDs, super bright, attract prawns, squid, baits crowds, and fish to your favorite spot with these super bright led fishing lights.
  • Perfectly Waterproof: With excellent waterproof performance of the lamp, material, waterproof ability will not fog up, got water inside when using.
  • With Cord: Heavy duty 5m/196.85inch dual copper cable power cord with battery clips, easy to connect to power. Suitable for fishing both in freshwater and saltwater.
  • Effect: Have fun watching the progression from microscopic life being attracted to the light at first then baits fish then finally the big ones, making fishing easy at night.
  • Package Includes:1 LED Baits Submersible Fishing Light
SaleBestseller No. 2
Lowrance HOOK Reveal 5 Inch Fish Finders with Transducer
  • FISHREVEAL: Fish are easier to find and easier to identify. FishReveal combines the target separation of Lowrance CHIRP sonar and the high-resolution images of structure from DownScan Imaging to makes fish light up on your display.
  • GPS PLOTTER: Navigating to your favorite fishing spot is simple with the GPS Plotter, which makes route, trail and waypoint navigation easy. HOOK Reveal "x" models do not include a map or support add-on mapping.
  • SPLITSHOT TRANSDUCER: Perfect for anglers who want the best views below the boat, SplitShot features the fish finding capability of wide-angle high CHIRP sonar and the high-resolution images of fish-holding structure from DownScan Imaging.
  • AUTOTUNING SONAR: Spend more time fishing and less time reworking your sonar settings with HOOK Reveal autotuning sonar, which ensures you get the best sonar image every time by automatically adjusting settings as fishing conditions change.
  • 5-INCH DISPLAY: Enjoy crisp and clear views of your display no matter the conditions – even in direct sunlight – with excellent clarity and daylight visibility of HOOK Reveal’s SolarMAX display.
SaleBestseller No. 3
Deeper DP2H10S10 Start Smart Fish Finder Castable Wi-Fi Fish Finder for Recreational Fishing from Dock, Shore or Bank, Black/Orange
  • It is for Recreational Fishing from Dock, Shore or Bank
  • Colour - Black, Orange
  • Durable and Long-lasting
  • English (Publication Language)
SaleBestseller No. 4
LUCKYLAKER Wireless Sonar Fish Finder Boat Handheld Transducer Depth Finder Kayak Portable Sensor Fish Finders Display LCD Screen for Canoe
  • Wireless Sonar Transducer: The wireless fish finder can support 196FT(60m) wireless operating range and can be immersed in the water directly. There is no technical difficulties and very simple to use. The sonar transducer contains an attractive lamp, which can attract fishes. Bedsides, the portable fish finder allows to use it in freshwater and saltwater.
  • Fish Size Display: The portable fish finder divide the size of fishes into large, medium and small as icons displayed on the screen. In some extent, the size of the fishes display will increase the chances of catching big fishes. In addition, the display fish finder can provide accurate real-time data, including the location of the fish, the depth of the water.
  • High Quality of Screen Display: The 2.4-inch TFT color LCD screen transducer fish finder has three colors to display the bottom contour information, which is clear and easy to see. Besides, the fish depth finder is a great fishing gear and is rechargeable by using the USB cable. Under full charging mode, the depth fish finder could lasted for 4-5 hours.
  • Updated Multiple Features: The kayak fish finder has the functions of water temperature display, bottom contour display, depth limit, sensitivity adjustment and so on. The water fish finder will also alert you when there are fish and schools nearby. Besides, the portable fish finder is also wonderful fishing gifts for men, and to can give to your father or boyfriend.
  • Alternative User Modes: The display fish finder contains two modes of simulation mode and wireless mode. You can use the simulation mode for trying all the functions. Meanwhile, the handheld fish finder allows you to use for kayak fishing, canoe fishing, shore fishing, boat fishing and so on. . For both ways you will find your joy and enjoy the great handheld fish finder!
SaleBestseller No. 5
iBobber Wireless Bluetooth Smart Fish Finder for iOS and Android Devices.
  • 【𝐄𝐚𝐬𝐲 𝐭𝐨 𝐔𝐬𝐞 】 Reelsonar portable fish finder is Easy to use, With a depth range of 135 feet and rechargeable battery life of 10+ hours, IOS and Android apps Bluetooth fishfinder with sonar
  • 【𝐕𝐢𝐬𝐮𝐚𝐥 𝐢𝐦𝐚𝐠𝐞𝐬 】 Sonar signals that are integrated find and reflect visual images of both static and moving objects beneath the water's surface. Depth-tagged fish icons color coded by size
  • 【𝐅𝐢𝐬𝐡 𝐀𝐥𝐚𝐫𝐦 】To be alerted when fish congregate under docks and piers, turn on the fish alarm when using iBobber's fishfinder feature. With the strike alert, iBobber can even let you know when fish are biting.
  • 【𝐑𝐞𝐠𝐚𝐫𝐝𝐥𝐞𝐬𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐰𝐞𝐚𝐭𝐡𝐞𝐫 】 With a fish finder, you may go out anytime you choose to test the waters. Regardless of the weather, whether it be freshwater or saltwater, shore fishing, or fishing on the ice. You could turn on your fish finder and begin hunting.
  • 【𝐆𝐢𝐟𝐭 𝐟𝐨𝐫 𝐅𝐢𝐬𝐡𝐢𝐧𝐠 】Great Gift for Fishing Whether you're looking for a present for your husband, father, friends, or any angler, reelsonar fish detector is now better than ever
Bestseller No. 6
Fishing Finder, Domary FF918-C100DS Color Screen Wired Fish Finder Dual Frequency 328ft/100m Water Depth Boat Fish Finder
  • 3.5 inch MVA TFT LCD color screen, pixels: 320V * 480H.
  • Adjustable display provides convenient viewing angle.
  • Water depth,water temperature, fish , fish size, bottom contour.
  • Depth capabibility up to 100 meters (328 feet).
  • Dual sonar frequency: 20 degrees in 200KHz, 60 degrees in 83KHz.
Bestseller No. 8
Humminbird 411610-1 Helix 7 Chirp MDI GPS G4 Fish Finder
  • 7" ultra-wide display gives you ample room to view the many pre-loaded split screen view options
  • Features MEGA Down Imaging, Dual Spectrum CHIRP Sonar, ethernet networking capability, Bluetooth connectivity, AutoChart Live, GPS and Humminbird Basemap built-in
  • MEGA Down Imaging: Get unprecedented underwater clarity with coverage down to 125 feet below your boat. You'll unlock new details with up to 3X more output than standard Down Imaging sonar
  • Dual Spectrum CHIRP: Before you cast, know what's down there thanks to long, well-defined fish arches, and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low Q CHIRP transducer, Dual Spectrum offers two ways to search: wide mode for maximum coverage and narrow mode for maximum detail
  • Ethernet Networking: High-speed Ethernet allows you to build a powerful, professional-grade fishing system. Easily connect multiple fish finders, or upgrade to add-on technologies like Minn Kota i-Pilot Link, 360 Imaging and CHIRP Radar
SaleBestseller No. 10
RICANK Portable Fish Finder with Hard Travel Case, Contour Readout Handheld Fishfinder Depth with Sonar Sensor Transducer and LCD Display Sensitivity Options Fish Depth Finder with Fishfinders Case
  • 【Fishes and Contour Readout】The fish finder portable detects and displays water depth, approximate fish location, fish size, short & tall weeds, sand & rocks on bottom.
  • 【Suitable for Various Fishing Ways】It can be used for off shore fishing, kayak fishing, ice fishing, lake fishing, sea fishing , river fishing, and so on. It will be one of your best fishing accessories.
  • 【Depth Readout】 The fish finder portable detector range is in a 45°cone underwater. The detection of depth range is from 3ft(1m) to 328ft (100m) below fishing sonar transducer. The fishing sonar sensor is with 25 ft cable and removable transducer float. Water depth shows by meters/feet.
  • 【Powerful Functions】5 modes sensitivity options; battery save mode; backlight mode; fish alarm; unit of measure. Normally fishing depth finder supports 4-5 hours continuous working with brand new batteries. Open battery save mode can be working even longer.
  • 【Package Included】1. Fish Finder Display 2. Sonar Sensor (Transducer) with 25ft cable 3. Removable Transducer Float with Rubber Stopper 4.Transducer Side-Scan Adapter 5. Stainless Bolt and Wing Nut 6.Neck Strap 7.Operation Manual.8.Travel Case

What to Look For in a Good Fish Finder

Best Fish Finders

Choosing the right fish finder is already difficult with numerous options, but if you don’t even know what to look for, it can feel impossible. Most of the time, you’ll find that the best fish finders excel in three main components.


If you’ve ever worked with a fish finder before, you might already know that the smaller it is, the better. Some larger vessels might require a bigger device, but if you’re on a small boat, anything larger than six inches might get in the way. This is especially true for rowboats or even kayaks.

Large fish finders can also be more difficult to mount as well as up to ten pounds heavier. It might not affect how well it works, but a fish finder that’s the right size can save you a lot of trouble.

Power Source

Every fish finder needs a power source. Smaller fish finders typically use portable waterproof batteries, but other models might use standard marine batteries as well. Standard marine batteries do require a bit more wiring and set-up, so if you’re looking to save a little time, a model that comes with a portable battery might be the better choice.

Not to mention, since you don’t have to wire your portable fish finder to the boat, you can take it with you on other vessels. Fishermen that travel or go on fishing trips with friends typically shop for portable fish finders rather than permanent fixtures.


Many people consider the transducer to be the “heart” of the fish finder, and for a good reason. One of the most crucial steps to making sure your fish finder works as it should is installing the transducer. If you don’t install it correctly, it might not emit sound waves or pick up signals as it should.

Different transducers come with different mounts for installing. For smaller boats, usually the most convenient mount is the transom mount that you can put in the hull. Unless you plan to use the fish finder on a larger boat as well, there’s typically no reason to worry about a more serious or in-depth installation for your transducer.

Color vs. Black and White Displays

There’s a little bit of controversy surrounding the better type of display on fish finders. While a lot of standard models come with color screens, it’s not uncommon to encounter black and white displays too—especially on smaller models fit for kayaks and rowboats. 

Some fishermen might argue that color screens provide a clearer image or better quality, but there shouldn’t be a difference in function. Your fish finder should work just as well in black and white as it does in color.

Buyer’s Guide: Features that You Should Look Into 

Now that you know the name of some of the best fish finders available, it is time to choose the right one. As expected, this depends on how and where you are fishing. And of course, how much are you willing to put down for your brand new fish finder. 

So, let’s cut to the chase and see what features you should look into when browsing you a fish finder.


Let’s start with the heart of the device: The transducer. It is responsible for sending and receiving signals. Needless to say, if the transducer doesn’t work, the device won’t work either. 

Typically, most fish finders either have a wired or wireless transducer, which one is the best depends on your needs. For example, wireless fish finders are better for shore, pier, or dock fishing. You can also use it for boat fishing as long as the craft is sitting still in the water. Otherwise, you will lose connection with it. 

Similarly, wired transducer transducers are more suitable for kayak or canoe fishing. You can fix the transducer into the hull and keep rowing until you find your fish. But like their wireless counterparts, you can also use them for fishing from a dock or similar. 

One thing that you should consider is the overall construction of the transduced. If it is a wire, find something both thick and strong. If it is wireless, search for a sturdy castable device. 

How Does a Transducer Work?

Think of the transducer as an interpreter. It receives electrical pulses and transforms them into sound waves. As soon as they hit something, for example, a fish, the sound wave will bounce back to the transducer. It will then transform the sound wave into an electrical pulse for the echosounder to display. 

Of course, different objects produce a higher or lower intensity return sound wave. Thus, it will display a unique interpretation for each returning wave. 

How Does a Transducer Calculate Depth? 

If we remember a little bit about high-school physics, we will be able to understand how a fish finders estimate depth. First, we need to know that sound waves travel through the water at average velocity. Thus, if we consider that this average velocity is constant, we can calculate the distance as the product between time and velocity. 

Of course, there is some margin of error here. For instance, water conditions such as temperature and murkiness affect how sound waves travel through the water. But for fishing applications, this margin of error is not a big deal.

Some high-end fish finders calculate a correction factor depending on the water’s conditions to give you more accurate readings. 


Now you know that you know what a transducer is and how it works, we should take some time to talk about the sonar frequency. Typically, most fish finders work with low, high, or dual frequencies. Premium models could also work with more than two. But for the average angler, two frequencies are more than enough. 

What is Frequency in a Fish Finder?

Frequency, as per physics, is the rate at which something repeats in a fixed window of time. In this case, frequency is the number of sound waves the transducer sends per unit of time. 

Low Frequencies

Most commercial fish finders use frequencies in the range of 50 to 200 kHz. Typically, low frequencies are those between the 50 to 80 kHz range. 

Low-frequency waves are inherently bigger than their high-frequency counterparts. Plus, the fish finder produces less of these waves. Thus, they can travel greater distances through the water. As a result, these are ideal frequencies when fishing in deep lakes or oceans.

However, the main downside is the amount of detail. Remember that the sound wave must bounce back to the transducer for it to be able to transform it into an electrical pulse and consequently show it on the screen. As we said before, low-frequency waves are bigger. Thus, they are less likely to bounce back on small objects such as tiny fishes or weeds. Hence, the lack of detail of its output.  

High Frequencies

All waves with 200 kHz, or more, fall under the high-frequency category. These are shorter waves, like the one produced by a small rock thrown into a pond. The transducer produces many of these waves. 

These waves produce more detail since they can bounce back with even the tiniest of targets. However, they won’t travel too far. That is why we recommend using them in shallow waters. 

Another thing that could cause a problem is that high-frequency waves typically drain more battery. 

Which One Should I Use?

Every tool has its purpose. If you mostly fish on shallow waters, go for a high-frequency fish finder. In contrast, for deep fishing, a low-frequency would be better. 

But if the budget allows it, try to purchase one with a dual-frequency sonar. It will give you the best of both worlds, and you will have a single device that does it all. 

Cone Angle

The cone angle is as important as frequency, as you will see in just a moment. 

Also known as the transducer beam angle, it indicates how wide or how narrow the cone of the transducer is. Broad cones allow more water coverage at the expense of less vertical travel. Like low-frequency beams, wide cone angles are better for water coverage and shallow waters. 

In contrast, narrow cones minimize horizontal travel; thereby, increasing the distance the sound wave will travel. Thus, this type of beam angle is better for deeper waters. 

Typically, most companies make different combinations of cone angles and frequencies to enhance certain features. For example, you can match a high-frequency transducer with a narrow cone angle to increase its effectiveness in deeper waters. 


A good display is as important as a decent transducer. You do nothing purchasing a fish finder with an overkill sonar and 2 inches of display. So, a selection of a device with a decent screen is vital. 

Screen Size

The first and most obvious thing is the size. We fancy large screens since they can clearly show what’s beneath the water. However, we understand that large devices are not always an option. For instance, they are commonly more expensive and take more space. Thus, if you are fishing inside a kayak, you would like a small device. 


Next is the resolution. Always go for a screen with the highest number of pixels possible. These fish finders provide an easy-to-read output, and you can see each target without problems. Obviously, a higher resolution screen also means more money. However, the rule of thumb here is going for the screen with the best resolution within your budget. 


Black and white fish finders get the job done, yes. Yet, sometimes the display could be hard to read. Thus, if possible, try to purchase a finder with a colored screen. 

Brightness and Visibility

Do you know what grinds my gear? A display that’s difficult to read during the day, when the sun is high in the sky. If you are like me, then go for a screen with adjustable brightness. This will be helpful during the night as well.

In-built GPS

Not all fish finders come with an in-built GPS. But it is a nice feature to have around, especially if you happen to discover a new fishing spot. Fish finders with GPS systems allow you to store locations, routes, and check your current position and speed. All useful features, especially if you are fishing from a boat. 

Some high-end models have the necessary tools for you to draw maps and charts, which is extremely useful when fishing in unknown waters. It will give you the possibility of checking all the areas and choose a spot according to the fish you wish to catch.  

But GPS is not necessary, particularly if you already have one or if you are fishing from the dock or shore. However, it doesn’t hurt to have one, as long as the budget allows it, of course.

Portable or Fixed

Most fish finders available are either portable or fixed. By portable, we mean something small enough that you can carry it with you wherever you go. These are compact devices that usually are wireless or easy to connect, making them perfect for anglers on the go and kayak or canoe fishing. 

On the other hand, fixed fish finders are typically bigger and usually come with rail-ready support for you to fix the device to your boat. You can also use this type of finder in a kayak or canoe. However, you could face some trouble if the fish finder is big or if it needs an external power source. Needless to say, fixed fish finders are a no go if you move a lot or if you switch boats constantly. 

There is also a question of price. Portable fish finders are commonly more affordable than fixed devices. The main reason is that they pack fewer features and are somewhat smaller. Thus, if you are tight on budget, you are better off with the first type. 

Through the Hull

This is the hardest way to install a transducer. Yet it is the best since it will be in direct contact with the water, and the signal will travel without a problem. Of course, not all boats are compatible with this option. The hull must be thick and strong, so it doesn’t break as you drill it. 

Thus, the first thing that you should use is to check whether or not your hull is compatible with this mounting option. If not, don’t worry, you can use the next style. 

In Hull

This is the best option if your hull is not thick enough, or if you don’t feel like piercing the hull. Here, you can glue the transducer to the hull. The sound waves will go through the hull and into the water.

Although it is a quick and safe way to secure it, the transducer won’t work properly. Why? Well, remember that the transducer determines the depth as the product between the wave’s velocity and time. Thus, the hull structure is different from that of the water; the waves will take more time to return. Therefore, the depth readings won’t be as accurate. Similarly, since the sound waves have to go through the hull, they won’t reach certain depths.

Stern Mount

As the name suggests, in this style of mounting, the transducer goes in the back of your boat (stern). You simply fix it with a couple of screws, and you are ready to go. But there is a catch. The device will take the full force of the passing water. Thus, the transducer must be tightly fixed, or it will come loose. Similarly, the stern should be strong enough to cope with the drag. 

Trolling Engine Mount

Another easy and quick way to fix your transducer. You can either permanently or temporarily stick it to the shaft of the engine. Some engines come with in-built compartments for transducers, making them perfect for this kind of mounting.

The main problem is that the vibration from the engine could temper with the sound waves. 

Water Protection

You might think that all fish finders are waterproof. Sadly, this is not the case. Your device will be more than fine with occasional water splashes. However, only a handful of brands offer greater protection. For example, some fish finders come with IPX7, which guarantees that the device can get soaked in water and still function without problems. 

We highly recommend going for such a device, especially if you fish from a kayak, where capsizes happen quite often. 

CHIRP Sonar 

Not all fish finders come with CHIRP sonar. But the ones that do typically have better performance than units with conventional sonar systems. 

What is CHIRP?

It stands for compressed high-intensity radiated pulse. A fancy name they gave to the multiple waves a CHIRP sonar can send. 

How Does CHIRP Sonar work?

CHIRP sonar devices produce a continuous sweep of sound waves with different frequencies. It starts with low-frequency waves for water penetration. Then, the transducer starts increasing the frequency to enhance the detail. All in a single pulse. The result is a greater number of waves traveling through the water, which in turn yields a better output. 

In the beginning, it was a military-only technology. Then, it found its way to the civil market, reaching the fish finders niche. Thankfully, the thriving competition forced brands such as Garmin to create affordable CHIRP fish finders. Something that was unthinkable a decade ago.

Matching the Fish Finder with Your Fishing Style

Structure Fishing

When structure fishing, or covering large expanses of water, the use of a GPS-equipped fish finder can be of immense importance. Sonar units of this nature offer high-definition depictions of what lies below an angler’s kayak at all times. This makes it possible to know when and where to cast in the bulk of situations.

Most top-tier fish finders also come equipped with a host of GPS capabilities. As such, anglers can store waypoints, judge distances, and navigate as they please. This increases an angler’s efficiency while they are on the water, and assists one in catching a greater number of fish.

Shallow Fishing

When fishing in the shallows, close to your launch location, one will need little more than a basic fish finder combo. In this situation, there is little reason for GPS use, or the use of additional mapping features, which tends to tack additional costs onto the total purchase price of a new fish finder. 

In many cases, a basic fish finder can be purchased for approximately $100, with higher-end models being priced in the $200-$300 range. A unit of this nature is perfect for the avid weekend angler.

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