Reef Tank & Fish ID: ReefIQ

Identify any fish, coral or invert, check a sick fish or coral, and track your reef tank's water.

ReefIQ is a fish identifier and reef tank app made for reef keepers, and for divers, snorkelers and beachcombers too.

IDENTIFY ANY SPECIES
Snap a fish, coral, shrimp, snail, crab or shell, in your tank, on a reef or in a tide pool. The fish identifier names it and tells you its size, diet, depth range, conservation status and a fun fact. For species kept in aquariums it adds the care level, the minimum tank size and whether it is reef compatible. Spotted a pest or hitchhiker? It says how harmful it is and how keepers remove it.

HEALTH CHECK
Worried about a fish or coral? Photograph it and get the most likely problem, how urgent it is, the signs to look for, the first steps for the next 24 hours and whether to quarantine.

MY TANK
Log your reef tank's water tests: alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature and pH. See each parameter against reef targets, how many are in range, a trend chart for each one and how much alkalinity your tank uses a day.

ASK A REEF EXPERT
Chat about an identification, your aquarium, stocking, pests, coral care or marine life in the wild. The chat knows your latest water tests.

THREE DETAIL LEVELS
Quick for the essentials, Detailed for a full profile, Expert for taxonomy, similar species and ecology. Add a question to any photo.

PRESETS
Fish, Coral, Invert & Shell and Health Check tell the AI what you are photographing, and a Custom Preset adds your own context to every photo.

SCAN HISTORY
Every identification is saved on your device.

NO ACCOUNT, ON YOUR PHONE
No sign-up. Your scans, water tests and chats are stored on your device. Reset All Data erases everything.

7 LANGUAGES
English, German, Spanish, French, Italian, Japanese, and Portuguese (Brazil).

SUBSCRIPTION
A subscription is required to use ReefIQ. Choose a weekly, monthly, or annual plan; the weekly and annual plans include a trial for new subscribers. Plans renew automatically at the price shown until you cancel in Google Play. Cancel a trial before it ends and you won't be charged. Prices are always shown before you subscribe.

NOT VETERINARY ADVICE
ReefIQ uses AI for educational identification and care guidance. Health checks are not veterinary advice: ask your local fish store or an aquatic vet before using any medication.

Privacy policy: https://www.format.partners/reefiq-privacy-policy
Terms: https://www.format.partners/reefiq-terms
Questions? hello@format.partners