How do I identify a fish from a photo?

Take a clear side photo that shows the body shape, fins, tail, mouth, and markings. Fish Identifier compares those traits and returns the most likely species with distinguishing details.

How accurate are the suggestions?

Results are best-effort AI suggestions, not expert confirmation. Similar species, poor lighting, partial views, juvenile forms, and regional variation can cause mistakes. Verify important results with a field guide, qualified expert, or current official source.

Can I save fish I catch?

Yes. Each result can be saved with its photo, suggested species, date, and optional location to create a personal catch journal.

Can I ask follow-up questions about a fish?

Yes. The chat uses the saved result as context. Its answers are AI-generated and must not replace current fishing regulations, food-safety advice, conservation rules, or professional guidance.

Practical guide

What fish is this?

Found a fish you don’t recognize? Narrow the possibilities using four visible clues: body shape, fin placement, coloration, and where it was found.

Scan a clear fish photo

Free to download on iPhone · Returns a likely match to compare

What to look for

Start with the body shape

The silhouette usually narrows the family before color or markings do. Match the fish to one of these common body plans.

Torpedo or streamlined

Fast open-water swimmers such as tuna, mackerel, salmon, and trout.

Flattened side-to-side

Deep-bodied fish such as bream, sunfish, perch, and bass.

Long and eel-like

Elongated ambush predators such as eels, pike, and barracuda.

Bottom-dweller

Flat undersides or barbels often point to catfish, flatfish, or rays.

Step by step

How to identify a fish

01
Note the body shape
Start with torpedo, deep-bodied, flat, or eel-like. Shape narrows the family quickly.
02
Count and place the fins
Compare dorsal-fin shape, spines, and whether a small adipose fin sits near the tail.
03
Read the coloration
Record stripes, spots, bands, and the lateral line before colors fade out of water.
04
Use the location
Freshwater or saltwater, region, habitat, and depth eliminate many lookalikes.
05
Confirm with a clear photo
Use a sharp side-on image showing the full fish to compare or scan for a likely species.

Try the app

Get a likely species to compare

Fish Identifier analyzes a photo and returns the likely common name, scientific name, family, confidence, and practical reference facts.

App Store

Direct answers

Fish identification questions

How can I identify a fish from a picture?

Use a clear side-on photo showing the whole fish. Compare body shape, fin placement, coloration, mouth, and tail, or scan the image with Fish Identifier for a likely match.

What fish can the app recognize?

Fish Identifier is designed for freshwater, saltwater, and brackish species worldwide. Image clarity and visible identifying features affect the result.

How do I know if a fish is safe to eat?

Edibility depends on species, size, preparation, and current local advisories. Treat app information as a reference and always check local fishing and consumption guidance.

Can I identify a fish without catching it?

Yes. A clear image from shore, a boat, a market display, or underwater can be enough when the full body and key markings are visible.