# Sim Aquarium: 3D Fish Tank — Relaxing Fish & Ocean Pet Sim

> 3D aquarium simulator for building and managing a virtual fish farm. (iPhone/iPad app by 达 雷.)

- Source: https://appshunter.io/ios/app/sim-aquarium-3d-fish-tank/id1050519228 (this page in markdown: same URL + `.md`)
- Developer: [达 雷](https://appshunter.io/developer/599274737)
- Category: Games, Entertainment, Casual, Simulation
- Price: Free with in-app purchases
- Rating: 4.20/5 from 15 App Store ratings · 95 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 190 MB
- Languages: American English, Arabic, French (France), German (Germany), Hindi, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 2 more
- Released: 2015-11-03
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sim-aquarium-3d-fish-tank/id1050519228/reviews.md

## What is Sim Aquarium?

Build your dream aquarium — now in stunning 3D!

Sim Aquarium is the ultimate fish tank simulation. Raise, breed, and collect dozens of beautiful sea creatures while designing the aquarium of your dreams.

GAME HIGHLIGHTS
- 50+ Species: Clownfish, sharks, turtles, jellyfish, koi and more — with new fish added regularly
- Endless Decoration: 25+ themed backgrounds and hundreds of coral, plants and treasures to customize your tank
- Fish Breeding: Discover unique hybrid species and build your ultimate collection
- Social Fun: Visit friends' aquariums, send gifts, and compete for the best decorated tank
- Mini Games: Match-3 puzzles and lucky slots to win bonus rewards
- Idle Friendly: Your fish grow even when you're away

WHY PLAYERS LOVE IT
- Realistic 3D fish animations for an immersive underwater experience
- Easy to pick up, relaxing to play — perfect for all ages
- Regular updates with new fish species and features
- The perfect stress-relief companion

Join millions of aquarium enthusiasts worldwide. Download now and start your underwater adventure!

Contact us:
Facebook: facebook.com/FishLiveApp
Support: support@mongko.com

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pile of Gems | $1.99 | one-time |
| Mound of Gems | $4.99 | one-time |
| Bag of Gems | $9.99 | one-time |
| Sack of Gems | $19.99 | one-time |
| Basket of Gems | $29.99 | one-time |
| Box of Gems | $49.99 | one-time |
| Chest of Gems | $99.99 | one-time |
| Aquarium Special Pack | $4.99 | one-time |
| Super Aquarium Pack | $19.99 | one-time |
| Rare Crab Breeding Pack | $9.99 | one-time |


## What do users think of Sim Aquarium?

Overall sentiment: mixed

**Pros**

- 🎨 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

**Cons**

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

**Commonly reported bugs**

- Game crashes frequently
- Game refuses to open or load
- Purchased items not received
- Game frozen
- Missing gems/rewards
- Tanks disappeared
- Snowing effect bug
- Ads pop up during tutorial

**Most requested features**

- More levels
- More fish breeds and decorations
- More challenges
- Option to remove ads
- Ability to email/message developers
- Confirmation for purchases
- New fish species like turtles, sharks, etc.
- Faster evolution of fish/tank
- Ability to turn off snow effect

## Recent user reviews (10 of 95)

All indexed reviews: https://appshunter.io/ios/app/sim-aquarium-3d-fish-tank/id1050519228/reviews.md

### 5/5 — PLEAE BRING beat chicken boss - kick and whack the funny street chicken jerk buddy BACK PLEASE BRING

*2026-08-04*

Bring beat chicken boss - kick and whack the funny street chicken jerk buddy: killer stress relief carnival game back

### 1/5 — Crash

*2026-02-11, version 3.3*

Crashed Everytime, you have to start again :(

### 1/5 — Crash

*2026-02-08*

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

**Developer response:** 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.

### 3/5 — Crashing

*2024-11-28*

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.

**Developer response:** 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.

### 1/5 — Diamond purchase

*2024-11-08*

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

**Developer response:** 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.

### 4/5 — Game will not open

*2024-04-20*

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.

### 5/5 — Needs More Levels  ‌‍

*2023-05-17*

The game is fun, but it could use more levels to keep things interesting   ‌ ‍

**Developer response:** hello, thank you for your support, hope you have a fun time.

### 5/5 — Challenging but Fun ‍

*2023-05-17*

The puzzles in Sim Aquarium 3D are challenging, but that's what makes the game so enjoyable. It's a great way to exercise your brain.‌‌

**Developer response:** hello, thank you for your support, hope you have a fun time.

### 5/5 — Needs more variety ‌

*2023-05-17*

The app is great, but it could use more fish breeds and decorations to keep things fresh.  ‌  ‌

**Developer response:** hello, thank you for your support, hope you have a fun time.

### 5/5 — Great graphics and animation‍    ‌

*2023-05-17*

The Sim Aquarium app has excellent graphics and animation that make the fish look very realistic. ​‌ ‌

**Developer response:** hello, thank you for your support, hope you have a fun time.

## Frequently asked questions about Sim Aquarium

### 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.

## Version history (last 5 releases)

### 3.7.2 — 2026-08-19

Breeding and everyday aquarium play are now more reliable.

This update fixes a rare issue that could close the game when a breeding room contained incomplete fish information. We also improved safeguards around missing fish details and images, helping your aquarium stay smoother during breeding, feeding, pond changes, and everyday play.

Fixed:
- Prevented rare closures when opening or checking a breeding room with incomplete fish information.
- Added safer handling for missing fish details and images.
- Improved stability across breeding, feeding, pond changes, and aquarium transitions.
- Included additional reliability and polish improvements throughout the aquarium.

### 3.7.1 — 2026-08-10

Fish feeding and collection progress are now more reliable.

This update fixes rare crashes that could interrupt play while fish search for food or while collection progress and rewards are displayed in certain languages. Your aquarium should now stay smoother during feeding, pond changes, and everyday play.

Fixed:
- Prevented rare crashes after feeding when fish choose their next food target.
- Improved collection progress and next-reward text across supported languages.
- Improved stability during pond changes and aquarium transitions.
- Added safer handling for unexpected text formatting.
- Included additional stability and polish improvements throughout the aquarium.

### 3.7 — 2026-07-31

Your first minutes in the aquarium are now smoother and calmer.

This update reduces early interruptions so new players can learn, feed fish, and enjoy the tank more naturally.

Improved:
- A calmer first-session flow with fewer early popups and ad interruptions.
- Permission prompts now appear at a more natural moment.
- Better onboarding and startup tracking so we can find new-player issues faster.

Fixed:
- Stability improvements around first launch and tutorial flow.
- Small polish fixes for aquarium flow, rewards, and early gameplay.

### 3.6.2 — 2026-07-19

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.

### 3.6.1 — 2026-07-10

Your 3D aquarium now runs smoother and feels more reliable. We improved stability so you can feed fish, decorate tanks, and collect rewards with fewer interruptions.

Improved
- Faster server connection when loading your aquarium and visiting friends.
- Smoother UI flow across fish care, decoration, rewards, and mini games.
- Better purchase delivery handling for diamond packs and other rewards.

Fixed
- Crash and startup issues reported by players.
- Cases where purchased diamonds or rewards could fail to appear.
- Several small polish issues for a more relaxing aquarium experience.

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## Related topics

[breeding fish](https://appshunter.io/ios/topics/breeding-fish)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*