Keeping the Water Dragon
Learn how to care for the world's most famous smiling salamander. From setting up a cool home to understanding their amazing healing powers, you'll become an axolotl expert.
Like Duolingo, but for Keeping the Water Dragon. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 24 levels across 3 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Setting Up Your First Tank, Understanding Axolotl Behavior, and The Science of the Smile. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in Keeping the Water Dragon
- Axolotls are bottom-dwellers
- Adult axolotl size
- Importance of footprint
- Minimum tank volume
- Choosing the best tank shape
- Minimum volume requirement
- Axolotls are clumsy swimmers and prefer to walk
- Choosing the best tank shape based on axolotl behavior
- Vertical height does not contribute to an axolotl's usable territory
- Minimum volume requirement for a single adult axolotl
- Mapping tank dimensions to axolotl needs
- Axolotls require water between 60-68°F (15-20°C)
- Water temperature usually sits 1-2 degrees higher than air due to equipment heat
- Temperatures above 70°F (21°C) cause chronic stress and immune failure
- Chillers are the only consistent high-power cooling solution
- Aquarium fans provide moderate cooling through evaporation
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Keeping the Water Dragon the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
How large can you expect a full-grown adult axolotl to grow?
Get it right to open this lesson and 23 more in the app.
How to learn Keeping the Water Dragon, step by step
Go in order. 24 short levels across 3 sections, about 48 minutes in all, five minutes a day.
- 1
Setting Up Your First Tank
- Choosing the Right Home
- Keeping the Water Cold
- The Importance of Clean Water
- Safe Sand and Decorations
- What to Feed Your New Friend
- 2
Understanding Axolotl Behavior
- Reading Body Language
- The Mystery of the Floating Axolotl
- Why They Don't Like Bright Lights
- 3
The Science of the Smile
- How They Regrow Limbs
- The Secret of Staying Young Forever
- Their Ancient Home in Mexico
- Saving Axolotls in the Wild
3 sections · 12 units · 24 levels. Built to play, not to enroll.
Questions about Keeping the Water Dragon
How do I learn Keeping the Water Dragon?
Go in order: start with Setting Up Your First Tank, then Understanding Axolotl Behavior, then The Science of the Smile. On Tomo that's 24 short levels, about 48 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Keeping the Water Dragon?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Keeping the Water Dragon is one of its free courses, and you can type any other topic to get a course of your own.
Is the Keeping the Water Dragon course free?
Yes. Keeping the Water Dragon is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Keeping the Water Dragon?
24 levels across 3 sections, about 48 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Keeping the Water Dragon?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Keeping the Water Dragon is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Keeping the Water Dragon today.
Download Tomo, search Keeping the Water Dragon, and play your first lesson in under a minute.