FreeHow to identify a fish from a single photo
Body shape, fins, and markings — the features that name a species fast.
Learn the field
Read the water before you cast.
Key features, look-alikes, seasons, habitats, handling — naturalist know-how, free to read inside the app and right here.
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FreeReading a fish: the key features that name a species
Fins, scales, mouth, lateral line — the field marks that separate look-alikes.
FreeFreshwater or saltwater? How to tell where a fish lives
Habitat narrows the field fast — learn the tells before you even ID.
FreeCommonly confused fish — and how to tell them apart
Bass, trout, perch families — the pairs people mix up, and the giveaways.
FreeFish by season: when species show up and why
Spawning runs, migrations, water temperature — timing that shapes what you'll see.
FreeWhere fish live: habitats from reef to riverbed
Reefs, lakes, estuaries, deep water — how habitat hints at the species.
FreeHandle and release fish the right way
Wet hands, support the body, quick photos — care that keeps fish healthy.
FreeKeep a fish life list: log every species you find
Photos, dates, places — turn casual sightings into a growing field guide.