A Quiet Betta
Mochi won't leave the bottom of a brand-new tank.

Run a cozy aquatic clinic where every patient is a mystery. Ask owners questions, examine animals, test the water, follow the clues, make a diagnosis, and treat the real cause.
Welcome to the clinic
Maybe a betta has stopped eating. Maybe a fish is breathing too fast. Maybe an injury that looks like disease has a completely different cause. In Aqua Doctor, you run a small neighbourhood clinic for aquatic animals. Talk to owners, observe your patients, investigate their tanks, and work out what is really going on. The obvious answer isn't always the right one.
01
Talk to worried owners, observe your patients and investigate their tanks. The obvious answer isn't always the right one.
02
A good diagnosis comes from putting the evidence together. Ask what changed, watch how your patient behaves, test the water, and look more closely when something seems easy to miss.
03
Choose care that fits your diagnosis. Clean an injury, treat illness when needed, or make the tank a healthier place to live. Then see how your patient responds.
04
Each patient you help builds your reputation. Unlock better medical tools and more ways to care, and take on new challenges as your clinic grows.
05
Fish are only the beginning. Learn what to watch for in an octopus, examine a sea turtle's shell, and find the right conditions for a jellyfish. Your work can grow into larger aquarium cases, too.
Today's appointments
Every case has a red herring or two. Can you find the real cause?
Mochi won't leave the bottom of a brand-new tank.
Six goldfish gasp at dawn and are fine by lunch.
Dot the platy's fins keep getting ragged.
Tangyuan has a scrape, and new décor.
A big water change goes wrong.
Nova lies low when the nights turn cold.
Twenty-three fish, one 54-litre tank.
A house call for a pale, runaway octopus.
A peek inside
Bettas and goldfish first, then octopuses, sea turtles, jellyfish and the big aquarium tanks.








For press & creators
Writing about Aqua Doctor, or playing it on stream? Help yourself to the fact sheet, logos, key art, screenshots, clips and transparent character art.
Aqua Doctor is a cozy diagnostic puzzle game about running a small neighbourhood clinic for aquatic animals. Fish can't tell you what's wrong, so every patient is a mystery: talk to owners, observe your patients, investigate their tanks, test the water and follow the clues to a diagnosis. Then treat the real cause, whether that means cleaning an injury, treating an illness or making the tank a healthier place to live, and see how your patient responds. Each patient you help builds your reputation, unlocking better medical tools and more ways to care. Fish are only the beginning: octopuses, sea turtles, jellyfish and larger aquarium cases follow.
Fact sheet
in the kit: logos · key art · screenshots · clips · characters
Coming soon
Wishlist Aqua Doctor on Steam and we'll let you know the moment the clinic opens.