Fish Identifier: Aquarium ID

Fish Identifier turns your phone into a field guide for fish, led by the habitat the species lives in. Photograph one in a tank, in a pond or over a reef and get a likely match in seconds.

WHAT ONE PHOTO GIVES YOU
- The common name, and an alternate name where there is one
- The habitat the species lives in: freshwater, saltwater, brackish, reef, pelagic or deep sea
- The Latin scientific name and family, or the genus when a photo cannot go further
- Native range, and where the species has been introduced
- Typical adult length, in centimeters and inches
- What it feeds on, and whether it schools or lives alone
- Look-alike species, and the trait that tells them apart
- A confidence level, so you can see how sure the match is

FRESHWATER, SALTWATER OR REEF?
The habitat leads every result, because it is the first thing an aquarium keeper, a diver or an angler actually wants. It is a short category from a fixed set: Freshwater, Saltwater, Brackish, Reef, Pelagic, Deep sea. It belongs to the species, not to the individual fish in your photo and not to the water you were standing in. A reef species photographed in a living room tank still reads Reef. It is a description, never a number, and never an instruction about what to put in a tank.

AQUARIUM, POND, REEF AND WILD
Point the camera at a fish, or pick a photo you already have. Cichlids, tetras, guppies, bettas and plecos in a community aquarium. Koi and goldfish in a garden pond. Wrasses and angelfish over a reef. Perch, carp, bass, trout and minnows in fresh water, snapper and mullet along the coast. Sharks and rays count too. Something that is not a fish comes back with low confidence rather than an invented name.

BUILT FOR THE PHOTOS YOU ACTUALLY TAKE
Through glass, at an angle, half the fish already leaving the frame. Body shape, fin count and shape, barring, scale pattern, mouth position and the lateral line all go into the match, and every result names the look-alikes with the trait that separates them. When a photo cannot support a species-level answer, and with juveniles, cichlids, gobies and minnows it often cannot, this fish identifier stops at the genus or the family and says so instead of inventing a species.

ASK ABOUT THE FISH YOU JUST FOUND
Every scan can open a chat thread about the species you just identified. Ask what separates it from its look-alikes, how far its range goes, what it feeds on. It stays on fish.

YOUR COLLECTION, KEPT
Every scan is saved on your device with its photo, so a week of dives or a tank you inherited becomes a list you can read later. No account.

WHO IT IS FOR
- Aquarium and pond keepers with a fish that arrived without a name
- Divers and snorkelers who want a name for what they saw
- Anglers who want to know what they just caught
- Parents and teachers at the aquarium with a curious child

HONEST ABOUT WHAT A PHOTO CAN DO
An identification here is a best-effort AI suggestion, not an authoritative determination. This fish identifier names species and tells you about them, and that is all it does. It is not a source of regulatory, health or husbandry guidance: it does not tell you what may be kept or taken where you live, it is not a setup or feeding plan for a tank, and it gives no advice on handling any fish. Aquarium notes and range notes are background about a species, never an instruction about the one in front of you.

Identification needs an internet connection. Scans you have already saved stay on your device and can be reopened at any time.

The app interface and the results are available in 33 languages.

PREMIUM
Free includes 2 identifications per day. Premium removes the daily limit and opens the full detail sheet on every result. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends, and you can manage or cancel yours in your Google Play account settings at any time.

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Recent changes:
We've polished Fish Identifier under the hood, with refinements and small fixes throughout. Thank you for exploring the water with us. Keep looking.