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Raise freshwater and saltwater fish in your own 3D aquarium. Feed your fish, watch them grow over real-time, and decorate their tanks with various items. Earn points through daily logins and missions to purchase new fish, food, and decorations.
✓Raise freshwater and saltwater fish
✓Feed fish and watch them grow
✓Customize aquarium layouts
✓Purchase fish, food, and decorations with points
✓Sync with fishing tournament app
✓Daily login bonuses and missions
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+2
What's New in (EXTENDS)Tank
1.4.1
November 9, 2026
・二つ池に立ち木と大きな木が加わりました。東の池の大きな木の下には木陰ができ、木の幹にも影が落ちます ・木陰の近くにすむ魚は、木陰に入って休むようになりました。池を回遊する魚も、木陰でひと休みします ・大きな地図で家のマークをタップすると「お部屋に戻る」が出て、そこからお部屋に戻れるようになりました ・木の枝の下からは投げられません。枝の外へ出てから投げてください ・お部屋の水槽では、メダカ・ヌマエビ・金魚を小さく数えるので、同じ水槽にたくさん入れられるようになりました ・水槽の岩や流木などの飾りの白いテカリを抑え、色や模様が自然に見えるようにしました ・12月1日から25日まで、ショップがクリスマスの飾り付けになります ・魚のすむ場所が変わることがあります ・エサをまいたあと、魚が岬の狭い所で止まってしまうことがあったのを直しました ・そのほか、表示の改善と不具合の修正を行いました
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FAQ
Does (EXTENDS)Tank have ads?
Yes, advertisements may be displayed within the (EXTENDS)Tank app. This is common for free-to-play games that offer in-app purchases.
How do I get new fish and decorations in (EXTENDS)Tank?
You can acquire new fish, food, and decorations by using points earned through daily login bonuses and completing missions within the app. Points cannot be purchased directly.
Can I sync my catches from fishing tournaments to (EXTENDS)Tank?
Yes, you can use the same account as the fishing tournament app '(EXTENDS)Weigh-in'. Approved catches from tournaments can be displayed in your aquarium at their recorded size.
What devices support (EXTENDS)Tank?
(EXTENDS)Tank is supported on iPhone, iPad, and iPod devices. It is designed for iOS users.
How often is (EXTENDS)Tank updated?
The latest version is 1.4.1, and the app was last updated on November 9, 2026. Updates typically bring new features, bug fixes, and improvements.
What is the age rating for (EXTENDS)Tank?
(EXTENDS)Tank has an age rating of 4+, making it suitable for young players and families.
Can I play (EXTENDS)Tank offline?
The description does not explicitly state offline play capabilities. However, features like daily login bonuses and syncing with other apps suggest an internet connection may be required for full functionality.
What are the main gameplay mechanics in (EXTENDS)Tank?
The core gameplay involves feeding your fish, cleaning the aquarium by wiping the glass, and arranging decorations. Fish grow slowly over real-time, and you can switch to a landscape view for a more immersive experience.
