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Sim Aquarium: 3D Fish Tank

Sim Aquarium: 3D Fish Tank

Relaxing Fish & Ocean Pet Sim

14 ratings
85 reviews
With Ads
🎮 Games
🎬 Entertainment
🎈 Casual
🕹 Simulation
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • November 3, 2015
  • July 19, 2026

Features

Developer

达 雷
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Sim Aquarium: 3D Fish Tank video #1 for iPhone
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Sim Aquarium: 3D Fish Tank screenshot #5 for iPhone
Sim Aquarium: 3D Fish Tank screenshot #6 for iPhone
iphone
ipad
🧾$1.99 - $99.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐85
Reviews↘︎
📝1+ tags
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🔄6+ apps
Alternatives↘︎
❓5 answered
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📦~ in 1 week
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About

Create and manage your own 3D aquarium, raising fish from babies to adults. Customize your underwater world with vibrant backgrounds and decorations, and interact with friends' aquariums. Buy, sell, and collect a variety of marine life.

✓Buy, raise, and sell fish
✓Create fish collections
✓Customize aquariums with backgrounds and decor
✓Explore a 3D aquatic world
✓Interact with friends via Game Center and Facebook
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What users say

Summarized from real user reviews of Sim Aquarium. Based on 14 reviews and a 4.1/5 average, it highlights the 7 positives and 7 negatives reviewers mention most about this game.

Positive things

  • 🎨Beautiful graphics and animation
  • 😌Relaxing and calming gameplay
  • 🐠Realistic and cute fish
  • 💡Interesting concept and gameplay
  • 🏠Customizable aquariums
  • 👨‍👩‍👧‍👦Enjoyed by kids and adults
  • 🧠Good brain exercise

Negative things

  • 💥Frequent crashes
  • 💸Expensive in-app purchases
  • ⏳Slow progression and hard goals
  • 🚫Ads are irritating
  • ❓Glitches and bugs
  • 📉Credits drop daily
  • 🤔Confusing game mechanics
See all reviews
+1

What's New in Sim Aquarium

3.6.2

July 19, 2026

Upgrading your aquarium now feels clearer and more rewarding. Version 3.6.2 improves how fish and decorations level up, so you can see costs sooner, understand failed upgrades faster, and get back to building your dream tank with less friction. Improved - Clearer fish and decor upgrade flow with better level and cost feedback. - New richer tip popups explain when you need more gold, gems, or upgrade materials. - Faster shortcuts from upgrade prompts so you can jump back into collecting what you need. Fixed - Cases where upgrade messages could feel empty, unclear, or easy to miss. - Dead-end upgrade moments around max level and insufficient resources. - Small polish issues across upgrade UI, localization, and reward guidance.

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In-App Purchases

$1.99

Pile of Gems

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User reviews

Most RecentHighest RatedLowest Rated

Crash

Crashed Everytime, you have to start again :(
Bald123456789Bald123456789

Crash

The game keeps crashing and making me completely start over every two minutes. I can’t even play. Terrible
Emigee1Emigee1

Response from developer

We are very sorry the game was crashing and forcing you to restart. The new 3.4 update focuses on crash fixes, stability, and smoother loading. Please update and give it another try. If the issue is resolved, an updated rating would help us a lot.

Crashing

I absolutely love this game and everything about it. But whenever I play it crashes every minute to 2 minutes which is irritating because I just wanna play.
itssimplykikiitssimplykiki

Response from developer

Thank you for loving the game, and sorry the crashes ruined the experience. Version 3.4 includes major stability and performance fixes for this kind of frequent crash. Please update to 3.4 and try again. If it feels stable now, we would be grateful if you update your rating.

Diamond purchase

I have purchased the 80 diamonds for $4.99 TWICE and still haven’t received them 🤦‍♀️
Rainfairy11370Rainfairy11370

Response from developer

We are very sorry about the missing diamonds. Version 3.4 fixes purchase delivery issues and improves server connection reliability. Please update to the latest version. If your purchase is still missing, contact support@mongko.com with your purchase date so we can help. If it is resolved, we would really appreciate an updated rating.

Game will not open

It was working just fine. But last night it refused to open. I deleted it from my device overnight, And tried to reload it today. But it will not load.

My saved game is on my cloud, yet it will not open.
FluteLlamaFluteLlama
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User experience

🐞

Reported Bugs

8 issues

Game crashes frequently

Bug

Game refuses to open or load

Bug

Purchased items not received

Bug

Game frozen

Bug

Missing gems/rewards

Bug

Tanks disappeared

Bug

Snowing effect bug

Bug

Ads pop up during tutorial

Bug
✨

Requested Features

9 requests

More levels

Feature

More fish breeds and decorations

Feature

More challenges

Feature

Option to remove ads

Feature

Ability to email/message developers

Feature

Confirmation for purchases

Feature

New fish species like turtles, sharks, etc.

Feature

Faster evolution of fish/tank

Feature

Ability to turn off snow effect

Feature

FAQ

What is Sim Aquarium: 3D Fish Games?

Sim Aquarium: 3D Fish Games is a 3D simulation game where you can build and manage your own aquarium. You can customize marine environments, raise fish from babies to adults, and collect various sea creatures.

What are the key features of this aquarium game?

Key features include buying, raising, and selling fish to earn coins, creating collections of fish, sharks, and turtles, customizing aquariums with over 25 backgrounds and decorations, and exploring an exciting 3D aquatic world.

Is Sim Aquarium: 3D Fish Games free to play?

Yes, the game is free to play. However, some in-game items can be purchased with real money. You can disable this option in your device's Restrictions menu if you prefer not to make in-app purchases.

What devices is Sim Aquarium: 3D Fish Games compatible with?

The app is available for iPhone and iPad, allowing you to build your aquarium empire on Apple mobile devices.

Can I play with friends on Sim Aquarium: 3D Fish Games?

Yes, the game supports Game Center and Facebook integration. You can visit your friends' fish tanks, give likes, and collaborate to create underwater seaworlds together.