Best Marine Fish Guide Apps

239+ iOS apps curated and reviewed

4.1 avg rating

18 free apps

Updated October 2026

If you already know Marine Fish Guide, this is the deeper bench. 239+ marine fish guide apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.

Compare top Marine Fish Guide Apps (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Marine Fish Guide	$9.99	—	No	No	Sep 2026
2	All Blue - The Field Guide	Free	—	No	No	Jun 2026
3	Encyclopedia of Fish	Free	3.4★ (11)	No	Yes	Oct 2026
4	Fishbrain - Fishing App	Free	4.7★ (76K)	Yes	Yes	Oct 2026
5	Fish Verify－Identifier, Finder	Free	4.3★ (8)	No	Yes	Oct 2026
6	Marine Life - North Atlantic	$14.99	4.7★ (10)	No	Yes	Oct 2026
7	Fish edu	Free	—	No	No	May 2026
8	Knots: 3D Guide & Marine Knot	Free	1.0★ (3)	Yes	Yes	Oct 2026

Top Picks for Marine Fish Guide

#1

Marine Fish Guide by mydigitalearth.com

for Southern Africa

Editor's Choice

0.0(0 ratings)

$9.99

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This guide helps South African marine anglers identify fish species. It provides detailed information, regulations, and tools like a length/weight calculator for 249 common catches.

#2

All Blue - The Field Guide by 超越徐

Fish ID & Marine Field Guide

Strong Contender

0.0(0 ratings)

Free

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#3

Encyclopedia of Fish by Good Spider, LLC

Discover species & habitats

Worth Considering

3.4(11 ratings)

FreeIn-App Purchases

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Discover a vast collection of fish species with detailed articles and stunning HD photos. This app offers an engaging and easy-to-understand learning experience for all ages, with offline access and a badge system to encourage exploration.

More Marine Fish Guide apps to explore

Fishbrain - Fishing App

Fishbrain - Fishing App

Fishbrain - Fishing App

Fish Spots, Maps & Forecast

Discover new fishing locations, access detailed local information, and connect with a large community of anglers. Improve your fishing skills with advanced maps, weather forecasts, and catch tracking tools.

Fishing maps with advanced layersDetailed fishing water informationCatch reports and bait recommendations

free with in-app purchases

Fish Verify－Identifier, Finder

Fish Verify－Identifier, Finder

Fish Verify－Identifier, Finder

Marine Biology App・Diving Plus

Instantly identify fish species from photos or descriptions using advanced AI. Access detailed information on habitat, behavior, and diet for each identified fish. Explore aquatic life with this beginner-friendly tool, usable online or offline.

AI-powered fish identificationDetailed species informationPhoto identification history

free with in-app purchases

Marine Life - North Atlantic

Marine Life - North Atlantic

Marine Life - North Atlantic

Marine Life - North Atlantic

This field guide helps identify and record marine life in the North Atlantic. It allows users to create personal observation lists, share discoveries, and receive notifications about desired species. An annual subscription unlocks full features for a deeper understanding of marine ecosystems.

Comprehensive marine life identificationRecord and share observationsCreate personal 'Life Lists'

Ultimate fish explorer.

Knots: 3D Guide & Marine Knot

Knots: 3D Guide & Marine Knot

Knots: 3D Guide & Marine Knot

Tie Sailing, Fishing & Camping

Learn to tie various knots with a detailed 3D guide. Essential for sailing, fishing, camping, and climbing, it offers clear, step-by-step instructions for critical situations.

3D knot visualizationStep-by-step instructionsSailing knots

Painted freshwater fish guide

Tetiaroa Fish Guide

Tetiaroa Fish Guide

Tetiaroa Fish Guide

by Tetiaroa Society

Identify common shallow-water reef fish in the Tetiaroa Atoll lagoon with this guide designed for snorkelers. Browse species like a book or search by color and shape, viewing up to five photos per fish. Save identified fish with notes and share your discoveries.

Identify 134 fish speciesSearch by color, shape, or nameMultiple photos per fish

by Jonathan Brown

Quickly identify seafood sustainability, health benefits, and invasive status. Access a comprehensive glossary and detailed information on fish populations and socio-economic factors.

Seafood sustainability lookupHealth benefits informationInvasive species identification

Fishes: East Pacific

Fishes: East Pacific

Fishes: East Pacific

by Smithsonian Institution

Identify tropical Eastern Pacific shore fish with this comprehensive guide. Features over 1,300 species with detailed descriptions, images, and range maps. Works offline and includes search and note-taking tools.

1,358 species coverageOver 5,000 imagesEnglish and Spanish interfaces

by Christina Bischofberger

This comprehensive guide identifies edible aquatic organisms, offering detailed information on species found in oceans, seas, and freshwater. It provides names in multiple languages, illustrations, and links to Wikipedia for further learning. Users can also add personal notes and photos.

Edible aquatic organism identificationMultilingual species namesIllustrations for each species

🍔 Food & Drink

SiriusXM Fish Mapping

This app provides detailed fishing recommendations and environmental data to help anglers find the best spots for bait and game fish. It displays information like plankton strength, sea surface temperature, and ocean currents to optimize fishing trips.

Fishing RecommendationsWeed LinesPlankton Front Strength

🗺️ Navigation

Catcharium: Fish ID & Log

Catcharium: Fish ID & Log

Catcharium: Fish ID & Log

Your catch journal & aquarium

Identify fish species from photos and log your catches. Build a personal aquarium with your recorded fish and explore a comprehensive field guide. Offers free daily scans and a premium subscription for unlimited access.

AI-assisted fish identificationDigital catch journalPersonal animated aquarium

Aquarium Guide Fish Identifier

Aquarium Guide Fish Identifier

Aquarium Guide Fish Identifier

Tank Planner & Compatibility

Plan your aquarium with confidence by checking fish compatibility, avoiding overcrowding, and discovering species that fit your tank. Browse over 1,000 fish profiles with detailed care information and use your camera to find likely matches. This guide helps both beginners and experienced aquarists make informed decisions for freshwater or saltwater setups.

Tank planning and compatibility checksFish suggestions for beginners1,000+ fish profiles with care details

free with in-app purchases

Marine Biology - Identify Fish

Marine Biology - Identify Fish

Marine Biology - Identify Fish

Fish / Sealife Scanner & AI

Instantly identify fish and marine life by simply taking a photo. Build a personal digital gallery of your discoveries and learn fascinating facts about aquatic species. Ideal for anglers, divers, and marine enthusiasts.

Instant AI fish identificationPhoto analysis for species recognitionPersonal digital fish gallery

free with in-app purchases

FishScan: AI Fish Identifier

FishScan: AI Fish Identifier

FishScan: AI Fish Identifier

Fish Identifier & AI Scanner

📷 Photo & Video

Tropical Reefs Species Guide

Tropical Reefs Species Guide

Tropical Reefs Species Guide

Find names of marine life

Identify marine life encountered while scuba diving or snorkeling. This app provides a comprehensive guide to fish, invertebrates, and corals found in tropical reef ecosystems.

Identify fishIdentify invertebratesIdentify corals

SeaLife: Marine Identifier

SeaLife: Marine Identifier

SeaLife: Marine Identifier

Fish, plants & wildlife

Discover over 1,000 marine species from various oceans with detailed profiles. Search and filter species by name, color, shape, or habitat. Learn about their behavior, morphology, and natural environment.

1,000+ marine species profilesPhotos in natural habitatBehavior and morphology info

FAQ about Marine Fish Guide

Are there free marine fish guide apps for iPhone?

Yes — 18 of the top marine fish guide apps we rank are free to download, including All Blue - The Field Guide and Encyclopedia of Fish.

Does Marine Fish Guide have ads or in-app purchases?

Marine Fish Guide has no ads and has no in-app purchases, according to its App Store listing as of October 2026.

How many marine fish guide apps are on the App Store?

We track 239+ marine fish guide apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.