The Best Castable Fish Finder of 2021: Buyer’s Guide

Kenneth ReavesEdited by: Kenneth Reaves
Michael DarmontReviewed by: Michael Darmont

Last Update:

The Rundown

Best Overall: ReelSonar Smart Fish Finder (click to see)
“The ReelSonar Smart Fish Finder’s impressive accessibility and versatility make it an angler’s best friend, especially when doing inland fishing. Ideal for those who are into bank fishing.”

Best High End: Deeper PRO+ Smart Sonar (click to see)
“The Deeper PRO+ Smart Sonar is GPS-enabled and built to function at an impressive depth of 260 feet. Ideal for anglers looking for a maximum range detection.”

Best Battery Life: Deeper Start Smart Fish Finder (click to see)
“With the Deeper Start’s long battery life, anglers don’t have to worry about staying long hours on the water with a reliable fish finder designed to operate at an impressive depth range.”

Today’s anglers are always on the go, continually searching for the next adventure and most good fishing holes. This mobile approach to angling leaves little room for bulky gear which only slows an angler down in their pursuits.

For this reason, a significant number of anglers have recently begun seeking out new, compact versions of their favorite gear like a fish finder.

Compact, castable fish finders have grown immensely popular over the past decade and have become a hot commodity.

Today’s best castable fish finders are incredibly durable, possess lengthy operating times, and are capable of detection at remarkable depths.

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Best Castable Fish Finder For The Money

Top 5 Picks

Best OVERALL

ReelSonar CGG-MY-IBOBBER iBobber Wireless Bluetooth Smart Fish Finder for iOS and Android devices,Classic,Small

ReelSonar Smart Fish Finder

Best Overall Castable Fish Finder

135 feet maximum depth for ideal freshwater coverage

An excellent option for every freshwater angler

Best high End

Deeper PRO+ Smart Sonar Castable and Portable WiFi Fish Finder with Gps for Kayaks and Boats on Shore Ice Fishing Fish Finder

Deeper PRO+ Smart Sonar

Best High-End Castable Fish Finder

Excellent depth range of 260 feet for first in class versatility

It does much more than finding fish

best battery Life

Deeper START Smart Fish Finder – Castable Wireless Wi-Fi Sonar Fish Detector

Deeper Start Smart Fish Finder

Best Battery Life Castable Fish Finder

Lengthy battery life for long days on the water

Ideal for those who rely upon the latest intel when attempting to maximize their success

Best handheld display

LUCKY Portable Fish Finder for Recreational Fishing from Dock, Shore or Bank

LUCKY Portable Fish Finder

Best Handheld Display Castable Fish Finder

Handheld monitor for smartphone-free usage

Ideal for those who wish to fish in peace by leaving their mobile devices behind

best value

Venterior Portable Rechargeable Fish Finder Wireless Sonar Sensor Fishfinder Depth Locator with Fish Size, Water Temperature, Bottom Contour, Color LCD Display

Venterior Rechargeable Fish Finder

Best Value Castable Fish Finder

Backlit screen for ease of visibility

Accurate data transmission without a premium price tag

Best Castable Fish Finder Reviews 2021

  1. Best Overall: ReelSonar Smart Fish Finder
  2. Best High End: Deeper PRO+ Smart Sonar
  3. Best Battery Life: Deeper Start Smart Fish Finder
  4. Best Handheld Display: LUCKY Portable Fish Finder
  5. Best Value: Venterior Rechargeable Fish Finder

ReelSonar Smart Fish Finder

Best Overall: An excellent option for every freshwater angler

ReelSonar CGG-MY-IBOBBER iBobber Wireless Bluetooth Smart Fish Finder for iOS and Android devices,Classic,Small

KEY FEATURES

  • Bluetooth compatible for seamless pairing to both iPhone and Android devices
  • Excellent battery life for all-day dependability
  • 135’ maximum depth for ideal freshwater coverage

The ReelSonar Wireless Bluetooth Smart Fish Finder should find favor among those who do not own a boat and prefer the simplicity of bank fishing, or even an avid angler of kayak fishing. This sonar unit can be placed into the water wherever an angler sees fit, offering substantial opportunities for those who have a hard time using traditional fixed transducer units. The ReelSonar Smart Fish Finder can be paired to a mobile device of any type, unlike other competing sonar kits.

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Many anglers should favor accessing data relayed by the ReelSonar Wireless Bluetooth Smart Fish Finder via any mobile phone. This fish finder utilizes Bluetooth connectivity to place a wealth of data right in the palm of your hand. Additionally, this unit is compatible with both IOS and Android products, seamlessly pairing to such devices, thereby providing streamlined operation.

The ReelSonar Wireless Bluetooth Smart Fish Finder features a maximum operating depth of 135 feet, making it quite versatile when utilized in freshwater applications. Many freshwater reservoirs do not reach depths above the maximum depth specified for this product, likely making it ideal for inland fisheries. However, this is probably a product off the table for those who fish primarily in saltwater.

Deeper PRO+ Smart Sonar

Best High End: It does much more than finding fish

Deeper PRO+ Smart Sonar Castable and Portable WiFi Fish Finder with Gps for Kayaks and Boats on Shore Ice Fishing Fish Finder

KEY FEATURES

  • Excellent depth range of 260-feet for first in class versatility
  • GPS enabled for a wide range of mapping capabilities
  • WIFI compatible for an exceptional range of detection

The Deeper PRO+ Smart Sonar should be perfect for any angler who is in search of a castable sonar unit that is rich in features, and fully capable of use in demanding circumstances. This castable fishfinder features an operating depth of 260-feet, which should be sufficient for most freshwater applications. The Deeper Pro+ Fish Finder also features a full range of GPS-enabled mapping capabilities.

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The Deeper Pro+ Smart Sonar can map and store water depth and bottom contour information thanks to its integrated GPS. These bathymetric maps can be accessed later when planning an upcoming fishing trip or providing helpful information to a couple of trusted fishing buddies.

The Deeper Pro+ Smart Sonar uses WIFI connectivity to provide a stable connection in any situation. You can also use a WIFI hotspot to provide ample range for all of your sonar needs. This fish finder is also compatible with both Apple IOS and Android products, meaning that most consumers will have complete service at their fingertips.

Deeper Start Smart Fish Finder

Best Battery Life: Ideal for those who rely upon the latest intel when attempting to maximize their success

Deeper START Smart Fish Finder – Castable Wireless Wi-Fi Sonar Fish Detector

KEY FEATURES

  • Bluetooth capable of effortless pairing to any mobile device
  • 165’ depth of operation for adequate fresh water usage
  • Lengthy battery life for long days on the water

If you are in search of a simple to operate, yet highly effective castable fish finder, the Deeper Start Smart Fish Finder should make the ideal candidate. The Deeper Start Smart Fish Finder can be paired to any mobile device, thereby relaying information to an angler in a trouble-free manner. This keeps you in the know while also eliminating the need for an additional handheld monitor.

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This features Bluetooth capabilities which you can easily pair with any mobile device. Just download the app, enable the Bluetooth services on your phone and start fishing.

Many anglers should also find immense favor in the Deeper Start Smart Fish Finder’s operating depth range. This unit can be cast to a maximum distance of 165 feet before losing connectivity. Likewise, the Deeper Start Smart Fish Finder can detect at depths of up to 165 feet. This should be more than adequate for nearly any freshwater application.

LUCKY Portable Fish Finder

Best Handheld Display: Ideal option for those who wish to fish in peace by leaving their mobile devices behind

LUCKY Portable Fish Finder for Recreational Fishing from Dock, Shore or Bank

KEY FEATURES

  • Handheld monitor for smartphone-free usage
  • Built-in fish alarm for quicker angler response times
  • 147-foot depth range for versatile use

If you do not currently own a smartphone or prefer leaving your phone in the safety of your vehicle but still wish to employ the use of a castable fish finder, then the LUCKY Portable Fish Finder should be ideal. This fish finder comes with a handheld monitor, accurately depicting water depth and fish location in a vivid color display. An audible alarm also alerts you to the presence of fish when detected in the immediate vicinity.

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The Lucky Portable Finder is approved for use in both fresh and saltwater and features an operating depth range of 147 feet. This should be sufficient for the vast majority of inland applications, as few freshwater fish routinely reside at depths below this mark. It also possesses a 5-8 hour service life on a single charge, allowing you to put in a full day on the water.

Many anglers are also likely to appreciate the Lucky Fish Finder’s use of an audible fish alarm, which alerts you to the presence of fish, should you be preoccupied tying a hook or unhooking a fish. This prevents you from missing any opportunity that might present itself and assists you in making the most efficient use of your time on the water.

Venterior Rechargeable Fish Finder

Best Value: Accurate data transmission, without a premium price tag

Venterior Portable Rechargeable Fish Finder Wireless Sonar Sensor Fishfinder Depth Locator with Fish Size, Water Temperature, Bottom Contour, Color LCD Display

KEY FEATURES

  • Feature-rich handheld receiver for accurate information delivery
  • Backlit screen for ease of visibility
  • 131-foot depth range for use in almost any freshwater application

If you are looking to utilize the castable fish finder this spring when heading out on the water, but have a somewhat restrictive budget to keep in mind, then the Venterior Portable Rechargeable Fish Finder should be worthy of your consideration. This sonar unit possesses several high-end features, such as a backlit screen, water temperature readings, and contour graphs, yet are offered at a highly economical price.

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The Venterior Rechargeable Fish Finder utilizes a compact handheld receiver, eliminating the need for a smartphone to facilitate use. This receiver features a backlit display, making it quite easy to read even under direct sunlight. The unit’s digital display shows the water temperature, water depth, fish depth, and relative size.

Many anglers are also likely to favor the Venterior Rechargeable Fish Finder’s 131-foot maximum operating depth range. While this range is not as sizable as several alternative products on the market, it should be sufficient for use in most freshwater applications. This is especially valuable considering the Venterior Fish Finder’s extremely reserved price point.


Pros and Cons of Using a Castable Fish Finder

Like any purchase, there are pros and cons associated when using a castable fishfinder—however, the. The following are the most notable points of type.

Pros

Usability From Shore

Many anglers do not own their boat, yet are avid in their endeavors, nonetheless. However, traditional fish finders often exclude these anglers, as they are not suitable for use from shore. However, the best castable fish finders alleviate this issue, allowing anglers from every walk of life to understand better what lies below the water’s surface.

More Efficient Use Of Time

The use of a castable fish finder provides anglers with the necessary information to make the most out of their time on the water. Anglers are no longer left to guess whether or not fish are actively holding in a specific location. Instead, the best castable fish finders reveal this information within a matter of minutes.

Cons

Additional Expense

One of the most impressive characteristics of fishing is that little financial expenditure is required to experience a wonderful afternoon on the water. Therefore, buying a castable fish finder can increase an angler’s success, though it does come at a cost.

Extra Gear To Keep Up With

If you are going for a minimalistic approach to fishing, then using a castable fish finder might be viewed as a drawback. While such a unit can make you a more efficient angler, you are presented with yet another piece of gear to keep up with and maintain during every outing.


Things to Consider When Buying a Castable Fish Finder

Apps

A user-friendly app can drastically increase the value of any castable fish finder.

As with any app-driven product, a castable fish finder is only as valuable as the interface which drives it. A simple, easy-to-use app allows an angler to optimize the effectiveness of their castable fish finder. On the other hand, a complicated app can create many headaches and render such a product too troubling for use.

Connectivity and Range

To be used effectively, a castable fish finder must be capable of establishing a reliable connection with the mobile device that it is paired to.

Castable fish finders utilize one of two forms of connectivity, Bluetooth or WIFI. WIFI tends to provide a more stable connection, at ranges up to 300-feet. Bluetooth, on the other hand, presents a more limited connectivity range of 100-200 feet. However, Bluetooth fish finders are typically cheaper to purchase.

Depth

The deeper a castable fish finder’s operating depth, the more versatile such a unit tends to be.

The operating depth of portable fish finders varies significantly from one product to the next and can range from 100-feet to 300+ feet. The frequency of its sonar determines the detection range of a particular castable fish finder. A sonar unit’s frequency describes the number and frequency of sound waves transmitted within a given period.

Fishfinders that emit a lower frequency can reach far deeper depths but are not capable of relaying images in as high of clarity. On the other hand, depth finders that transmit higher frequencies can display images in remarkable clarity but are unable to reach as deep as depths.

Size and Weight

The size and weight of a castable fish finder directly influence the portability of such a unit.

While most portable fish finders tend to be compact, some are more sizable than others. The lightest of these products weigh only a few ounces and can be carried in an angler’s pocket, offering next-level convenience.

Sonar Method

Today’s castable fish finders come in multiple sonar configurations.

Castable fish finders come in 2D and 3D sonar forms, each of which has distinct advantages and disadvantages.

2D Sonar

Today’s 2D sonar units tend to be reasonably reliable yet incapable of producing images of defined clarity like a 3D sonar does. Additionally, 2D fishfinders tend to be far less expensive than 3D alternatives.

3D Sonar

As of late, 3D fish finders have grown immensely in popularity, mainly because of the high-resolution images that they portray. However, units of this nature do not tend to be as reliable as their 2D counterparts and command a much higher purchase price.

Versatility

A versatile fish finder is of significant value to every angler, no matter its specific type.

Some of the best castable fish finders come with additional mounts and hardware that make them acceptable for use in a wide range of settings. This extra versatility provides anglers with more bang for their buck and adds value to their investment.


Questions & Answers

What are castable fish finders?

A castable fish finder is a small, compact sonar unit used by anglers to determine what lies beneath the water’s surface. These small fish finders can be cast out onto the water with the use of a castable line. This can either be done from a boat or the bank, making these units far more versatile than the bulk of fixed fish finders.

The bulk of castable fish finders utilize one of two handheld interfaces for data transmission. Some units use Bluetooth or WIFI connectivity to relay data to an angler’s tablet or mobile phone. Others, however, feature a handheld monitor of their own.

How do I use a castable fishfinder?

Castable fishfinders are extremely easy to use and can be placed into quite rapidly. However, one must first ensure that their castable fish finder is adequately charged before use. Depending upon the model to be used, one might be required to install a set of batteries or charge a rechargeable battery. When using a unit that connects to a mobile device, one must also download a device-specific app.

With your unit prepped for use, you will be ready to hit the water. Using a castable fish finder is no more difficult than casting it out on the water, using a supplied rope or line, and consulting your mobile device to obtain any data transmitted.


Conclusion

Castable fish finders are handy. Whether you are a beginner angler or decades-old fisher, you will be grateful to have this gear in your pack on your next fishing trip. Thanks to the advancements of technology, looking for your target fish is much easier.