Now on iOS and Android

Identify fish fast. Log every moment.

Snap a photo and get likely species instantly. Compare look-alikes, then log the catch or dive.

Seabook camera identifying a leopard coral grouper

Match

Plectropomus leopardus

Leopard coral grouper

Max size
4 ft
Max depth
328 ft
Habitat
Coral reef

Fish Identifier by Seabook is a free-to-download app for iOS and Android. It names fish from a Leopard coral grouper photo, or from traits like color and fin shape, and keeps every catch and dive School of jacks on a dive in one log.

From photo to a confident ID.

Works on the dock, on the boat and after the dive.

  1. Snap or upload

    From shore, boat, or during a dive. Point the camera at the fish or pick a shot from your gallery.

    Camera view with the fish in the frame
  2. Get instant matches

    Likely species, ranked by visual similarity, with the key facts for each one.

    Result screen for Coral Grouper, Plectropomus leopardus
  3. Compare look-alikes

    Check the traits that separate similar species: color, pattern, fin shape and body profile.

    Species details with max size, weight, depth and colors
  4. Save it to your log

    Record the sighting or catch with notes and location. Find it again before the next trip.

    Logbook with dives, duration and max depth

Everything you need, in one app.

Leopard coral grouper on a reef

Photo ID

Point, shoot, and see likely species ranked by visual similarity.

Leopard coral grouper Plectropomus leopardus

Compare look-alikes

Size, depth, colors and habitat, side by side.

Species details for leopard coral grouper

Search by traits

No photo? Filter by what you remember.

  • Color
  • Pattern
  • Fin shape
  • Tail shape
  • Body type
  • Size
  • Habitat
  • Region
School of jacks at Eagle Rock, Mexico

78.7 ft max depth at Eagle Rock

Catch and dive log

Measurements, lure and spot for catches. Depth, time and species for dives.

Shark from a Want to see collection Soldierfish school from a trip collection

Collections

Trip targets, study sets and favorites.

Offline, then synced

Your logbook and the traits catalog work without signal. Sign in to sync.

Your marine life, organized.

Dives, catches and collections in one place, synced to the cloud.

Dive log with dates, sites and max depth
Saved species with description
Collections: Want to see, Favorites and trip lists

Made for people who spend time on the water.

  • Anglers

    Confirm IDs from boat or dock photos. Store measurements, gear and notes. Build trip and target lists.

  • Divers

    Match species from post-dive photos. Log depth, site and buddies. Flag species to find again.

  • Ocean lovers

    Learn names and signature traits. Keep a gallery of sightings. Share collections with friends.

  • Biology students

    Search by anatomy and habitat. Organize study notes. Track observations for class.

How to identify a fish from a photo.

Six checks that narrow it down, with or without the app.

  1. Note region and habitat

    Reef, wreck, estuary or lake. It narrows the species fast.

  2. Check the body profile

    Elongated, deep-bodied, or eel-like.

  3. Inspect color and pattern

    Bars, spots, stripes or blotches on the base color.

  4. Look at fins and tail

    Forked or rounded tail, and how the dorsal fins connect.

  5. Compare distinctive marks

    Eye lines, fin spines, head bumps.

  6. Use Seabook trait filters

    Match the final candidates against photos in the app.

Questions, answered.

How do I identify a fish from a photo?
Open Seabook, take a photo or pick one from your gallery, and the app suggests likely species ranked by visual similarity. Compare the look-alikes, then save the match to your logbook.
Can I identify fish without the name?
Yes. Use trait filters like color, pattern, fin & tail shape, body type, habitat, and region.
Does it cover freshwater and saltwater fish?
Yes. The catalog covers many common freshwater and marine species, with more added regularly.
Does this help anglers?
Yes. Confirm species from a photo, then save every catch with measurements, lure, and spot details.
Is there a dive log?
Yes. Record location, depth, notes, and species to review later.
Can I make my own collections?
Yes. Build trip targets, study sets, and favorites.
Does it work offline?
Yes. Enable offline mode to keep your logbook and the traits catalog available without a connection.
Will my data sync?
Yes. Sign in to sync logs and collections securely to the cloud.
Which phones does it run on?
Fish Identifier by Seabook is available for iPhone (iOS) and Android, and is free to download.
Seabook app icon

Know the name. Keep the memory.

Fish ID, catch log and dive log in one app. Free to download.

QR code linking to the Seabook download page
Scan with your phone camera to download.