These are the top five best Fish Finders on the market, chosen from Hundreds of models.

#5 –  Signstek Ff-003 BestValueLRG

Price: $107.00
You save: $51.00 (32 %)
1 new from $107.001 used from $95.00
  • [High-Tech Display] 2.4" TFT LCD Sunlight Display. Shows 512 colors and includes a white LED front light for early morning trips.
  • [Personal Sonar Detector] Utilizes sound waves to display bottom contours, identify big/small fish and their depth. Also indicates water temperature.
  • [Personal Sonar Detector] Utilizes sound waves to display bottom contours, identify big/small fish and their depth. Also indicates water temperature.
  • [Adjustable Sensitivity] Includes 100-level sensitivity settings and multi-level depth range.
  • [Easy Operation] Turn it on, cast out the sonar sensor and you're good to go!

Because it’s so easy to use, the Signstek FF-003 is one of the best fish finders on the market for kayakers. From the moment it turns on, this model starts collecting and displaying data. That includes sonar. Whether you’re still on the bank or out on the boat, you can send signals from the palm of your hand. The portable design is perfect for anglers of all ages and skill levels.

The FF-003 has impressive settings and specifications for such a compact fish finder. Water temperature, depth and other readings display on its colored LCD screen, while sonar identifies the size and position of surrounding fish. This model’s transducer produces readings up to 240 feet deep with its 200/83 kHz signal. There’s no other fish finder on the market that offers this much value at such an affordable price point.

#4 –  Lowrance Mark-5X

Lowrance 000-11172-001 Elite-5 HDI Combo with Navionics Gold U.S. Charts and 50/200-455/800KHz Transducer
Price: --
0 new0 used
  • 5" color LCD
  • Includes 50/200+455/800 KHz transom mount transducer
  • Standard and Down Scan Sonar
  • Built-in GPS
  • Pre-loaded Nations Gold charts

If you’re looking for an affordable fish finder that’s perfect for lakes and rivers, the Lowrance Mark-5x is for you. This model’s transducer produces high frequency (200 kHz) signals that penetrate shallow water more effectively than lower frequencies. The transom-mount transducer also installs easily and swivels so you can adjust your view in the boat. This is a great model for shallow water anglers.

Simplicity is another highlight of the Mark-5x. Equipped with automatic mode, this model starts collecting data and finding fish straight out of the box. It also features an advanced user mode, which adjusts the fish finder’s settings to the current water conditions. These settings, and other readings like depth and fish location, are easy to read on the five-inch LCD screen. The display features a 16-level gray scale and has a 480×480 resolution. There’s a lot to love about the Mark-5x.

#3 – Raymarine Dragonfly 4Pro

Price: $299.99
You save: $9.99 (3 %)
29 new from $299.990 used
  • 4.3" All-weather, high-definition LED backlit display
  • Optically bonded for sharp color, wide viewing angles and no internal fogging
  • Dual-channel sonar - wide-spectrum CHIRP DownVision sonar for photo-like images and a second CHIRP conventional sonar channel for targeting fish
  • Stream live sonar data to your smartphone with Raymarine's Wi-Fish mobile app; With the Wi-Fish you can rewind, save and share the day's catch with friends on your favorite social networks
  • Includes US lakes, rivers and coastal maps; Includes transom mount CHIRP transducer with temperature sensor

The Raymarine Dragonfly 4Pro separates itself from other mid-level fish finders on the market with its advanced features. Chirp DownVision, a sonar technology that displays fish location, depth and other data, provides an advanced view of the underwater layout. There’s also convential sonar to target fish and a wide-angle beam to explore a larger area of the water. This model’s transducer has a frequency range from 50 to 200 kHz, so it’s ideal for shallow water and depths as low as 600 feet.

Because the Dragonfly 4Pro features built-in WiFi, all of this sonar data can stream to your phone with the Raymarine Wi-Fish mobile app. With this technology, users can rewind, capture and share sonar images with their friends on the internet. For those who want to stick to fishing, this model also offers built-in GPS and multiple chart plotting options. No matter what you like to do on the water, this fish finder has you covered.

#2 – Humminbird Helix 5 Si

Price: $449.88
7 new from $449.881 used from $356.85
  • Precision Internal GPS Chartplotting with built-in UniMap cartography
  • Maximize your angling experience with the Humminbird HELIX 5 SI GPS fishfinder GPS system
  • Micro SD card slot for optional maps or for saving waypoints

Because of its mapping capability and advanced sonar, the Humminbird Helix 5 SI is our pick for the best fish finder GPS combo. This model stores up to 2,500 waypoints and 45 routes, while its GPS system tracks your position with remarkable accuracy. Built-in UniMap cartography also provides 3D charts of lakes, rivers and the U.S. coastline. These diagrams are clear and easy to follow on the 800×480 resolution screen. The five-inch display is capable of split-screen viewing and also shows the water temperature, depth and boat speed.

One of the most impressive features on the Helix 5 SI is the side imaging sonar. This setting delivers a 180-degree, side-to-side view of the bottom contour and wildlife underwater. This technology is possible because of the fish finder’s dual-beam, transom-mount transducer. Depending on your desired viewing area, this device sends out multiple frequencies that can reach up to 1,500 feet deep. The transducer is included with the fish finder, along with a mounting bracket and power cord. This model has everything you need to fish more successfully.

#1 – Garmin Striker 7Sv

Price: --
0 new0 used
  • RUGGED DESIGN - New rugged, outdoor look complements your lifestyle. Able to withstand the harsh marine environment with excellent performance.
  • HIGH-SENSITIVITY GPS - The built-in GPS receiver allows you to mark your favorite fishing spot and get back to it tomorrow. This also allows the device to display GPS speed so you know how fast you are trolling.
  • WAYPOINT MAP - Use the waypoint map to easily view, mark and navigate to locations such as brush piles, stumps and docks.
  • CHIRP SONAR - CHIRP sends a continuous sweep of frequencies ranging from low to high which provides a wider range of information. CHIRP sonar is able to create crisper fish arches with greater target separation.
  • BUILT-IN FLASHER - View your sonar data in the classic flasher format; ideal for ice fishing or vertical jigging.

The Garmin Striker 7SV tops our list of the best fish finders because it’s superior in just about every area.
With its patented scanning sonars, this model produces picture-quality images up to 750 feet below and 750 feet on each side of the boat. Its CHIRP transducer also sends out multiple sonar frequencies that penetrate both shallow and deep water effectively. You can even go back through your sonar history and review hot spots you may want to return to again.

These specific waypoints are easy to find with the Striker 7SV’s reliable, built-in GPS. Whether you’re fishing in or around the water, you can mark your favorite areas and share them with other Striker models or compatible echoMAP devices. The only thing easier than tracking these hot spots is seeing them on the sizable, six-inch display. This model’s screen produces exceptionally clear images with 800×480 resolution. If all this wasn’t enough, the 7SV also comes with an IPX7 water rating. There’s no denying this is the best overall fish finder on the market.

Fish Finder Reviews & Comparisons

FISH FINDERS TopPickLRGgarmin-striker-fish-finder white imagehummingbird-409640-fish-finder white imageraymarine-dragonfly-fish-finder white imagelowrance-elite-5-fish-finder BestValueLRGsignstek-ff-003-fish-finder
MODELS  Garmin Striker 7Sv  Humminbird Helix 5 Si  Raymarine Dragonfly 4Pro
 Lowrance Mark-5X
 Signstek Ff-003






X-FACTOR Advanced Sonar Side Imaging Sonar Chirp Downvision Advanced User Mode Portable Design
6″ X 3.6″ 5″ 4.3″ 5″ 2.8″
800 X 480 800 X 480 480 X 272 480 X 480 240 X 160
TRANSDUCER FREQUENCY Multiple Frequencies From 50-800 Khz 200/83/455 Khz Dual-Beam Frequencies From 50-200 Khz 200 Khz 200/83 Khz
500 Watts 500 Watts 500 Watts 200 Watts 100 Watts
Transom/Trolling Motor Transom Transom/Trolling Motor Transom Handheld, But Can Be Mounted To Hull
WARRANTY LENGTH One-Year Limited One-Year Limited One-Year Limited One-Year N/A
COLORED SCREEN YesMark YesMark YesMark NoMark YesMark
CHIRP SONAR YesMark NoMark YesMark NoMark NoMark
MOUNTS INCLUDED YesMark YesMark YesMark YesMark NoMark
AMAZON PRIME? YesMark YesMark YesMark YesMark YesMark
LEARN MORE Read Full Review Read Full Review Read Full Review Read Full Review Read Full Review


Fish Finders Buyer’s Guide

There’s a lot of technical terms being thrown around in these reviews, so it may benefit you to brush up on some of the features to look for when purchasing the best fish finder for your needs. Here’s a quick breakdown of some terms you’ll often see and how they relate to your fish finder experience.

Transducers And Sonar Frequency: There are several types of transducers used within fish finders, but all of them operate under the same principles. Higher frequency sonar signals eliminate more interference from the screen and produce clearer images, while lower frequency signals penetrate deep water more effectively. Most experts recommend using at least a 200kHz signal for waters up to 200 feet deep, and a 50 to 80 kHz signal for waters deeper than 200 feet.

Power: Power, which is measured in watts, is a big factor to consider with fish finders. Because fish finders decipher sonar signals they receive from the transducer, models with more power display readings faster and penetrate deeper water. Models with lower power are better suited for shallow water.

Screen Resolution: The images on your fish finder’s LCD screen get sharper or wider based on how many pixels it has. More vertical pixels improve the resolution at lower depths, while the amount of horizontal pixels determines how long a fish stays onscreen before swimming out of view. The amount of pixels per square inch on your display also improves an image’s overall detail and gives you a better look at what’s below you.

Keep these terms in mind when comparing prices and features to find the Best Fish Finder!

Top 5 Best Fish Finders

Ranking Fish Finder Best Feature
#1 Garmin Striker 7Sv Advanced Sonar
#2 Humminbird Helix 5 Si Side Imaging Sonar
#3 Raymarine Dragonfly 4Pro
Chirp Downvision
#4 Lowrance Mark-5X
Advanced User Mode
#5 Signstek Ff-003 Portable Design


About the Author:

David D. was an all-star athlete in high school and has been passionate about sports his entire life. Long after he hung up his cleats, he shifted focus to the outdoors, becoming a hiking guide and a fishing instructor. If it’s a product that’s used in any type of exercise, he’s probably given it a try at some point.