Comparison

Medaka Aquarium Breeder vs 釣り、アクアリウムー水族館経営の世界

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Medaka Aquarium Breeder

Raise and breed killifish in a relaxing aquarium simulation. Manage water quality, feed your fish, and sell them to upgrade your tank. Discover new species and create a beautiful underwater world.

Highlights
  • Manage aquarium water quality and temperature
  • Feed and grow killifish
  • Sell fish to earn money
  • Breed new killifish species
  • Customize aquarium with equipment and layouts
  • Offline play available
Features
Read full description

Medaka Aquarium Breeder is an idle breeding game where you become a medaka breeder, manage your aquarium, and raise your own medaka fish. Adjust the water temperature and quality, feed your medaka, and watch them grow over time. Even while the app is closed, your medaka continue to grow little by little. Sell the medaka you raise to earn money, buy aquarium equipment and layout items, and create your own relaxing aquarium. A major update has expanded the breeding and collection experience. Main features added in the update: - View medaka relationships and breeding routes with the genetic map - Use Breed Points to unlock hints for undiscovered medaka and analysis for discovered medaka - Expanded breeding patterns make it possible to discover more medaka varieties - Seasonal Shop where you can obtain medaka inspired by spring, summer, autumn, and winter - Expanded encyclopedia and genetic map with more detailed information about discovered medaka - Updated Tips to make new features and breeding advice easier to understand How to play: - Manage water temperature and quality, and feed your medaka as they grow. - Feeding and cleaning take only a short time, making it easy to care for your aquarium during spare moments. - Sell raised medaka to earn money, then buy aquarium equipment and layout items. - Pair male and female medaka to produce offspring that inherit traits from their parents. - Use the genetic map and encyclopedia to search for medaka you have not discovered yet. - Check in-game Tips anytime to learn about raising medaka and using each feature. Features: - Idle growth system where medaka continue to grow while you are away - Aquarium layout customization with equipment, sand, aquatic plants, stones, and more - Collection gameplay where breeding can lead to new medaka varieties - Encyclopedia to review discovered medaka - Genetic map to check parent-child relationships and breeding clues - Seasonal Shop where different medaka appear depending on the season - A calm aquarium atmosphere with water sounds and music The medaka available in the shop are only part of what you can discover. Some medaka can only be created through breeding, and others are connected to the seasons. Think about parent combinations, unlock hints with Breed Points, and work toward completing your encyclopedia. Recommended for players who: - Enjoy raising games that can be played little by little - Like aquariums and relaxing water-themed experiences - Enjoy caring for virtual pets - Like discovering new varieties through breeding or pairing systems - Want to steadily complete an encyclopedia or collection - Want a calm game to enjoy during breaks or quiet moments Raise medaka, breed new varieties, expand your encyclopedia, and create your own aquarium.

About

釣り、アクアリウムー水族館経営の世界

Features
Read full description

釣った魚を水族館に展示して、オンラインで、他のプレイヤーに見てもらおう! 魚を釣って、それらを水族館に展示して、オンラインで他のプレイヤーに見てもらうゲームです。 1.魚を釣るために、まずは、釣り場に行こう。 砂浜、防波堤、沖の三つの場所があるよ。 それぞれ釣れる魚が違うよ。 2.お店へ行って、レアな魚を釣り上げる確率が上がる上級のエサを手に入れよう。 3.水槽画面に行って、釣った魚を展示しよう。 展示ボタンを押すと他のプレイヤーに見てもらえるよ。 水槽画面は合計5つ。いろいろな魚を組み合わせて個性的な水族館を作ろう。 こんな人におすすめ ・釣りゲームが好き。 ・新しいコンテンツのゲームがやりたい。 ・普段から釣りゲームをプレイしている。 ・魚を飼うことが好きだ。 ・子供の頃、水族館に行ったことがある。 ・アクアリウムが好きだ。 ・魚を飼いたい。 ・観察するのが好きだ。 ・鯛やサバなどの実際に存在する魚を釣ってみたい。 ・アクアリウムを体験したい。 ・水族館を作るゲームがやりたい。 ・春、夏、秋、冬、どんな季節でも、晴れ、雨、曇り、強風、雪、どんな天候でも、魚釣りがしたい。 ・水族館の経営がしたい。 このゲームは釣った魚で、水族館を作るゲームです。いろんな種類の魚を集めて、水族館に展示しよう。

Screenshots

Medaka Aquarium Breeder4 screens
釣り、アクアリウムー水族館経営の世界4 screens

Verdict

The call

The clearest difference is update cadence: Medaka Aquarium Breeder at every 11 days against 釣り、アクアリウムー水族館経営の世界's every 6 months. Medaka Aquarium Breeder also leads on iOS requirement (13.3 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Medaka Aquarium Breeder ships an update every 11 days, 釣り、アクアリウムー水族館経営の世界 every 6 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Medaka Aquarium Breeder versus 釣り、アクアリウムー水族館経営の世界: the parameters behind the verdict, then further details
ParameterMedaka Aquarium Breeder釣り、アクアリウムー水族館経営の世界
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 11 days — betterEvery 6 months
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.3 — better15.0
Further details — not scored
Size244 MB221 MB
Age rating4+4+
DeveloperYuki NaruseKenichi Fujii

In-app purchases

None

Medaka Aquarium Breeder

No in-app purchases

None

釣り、アクアリウムー水族館経営の世界

No in-app purchases

Questions

Is Medaka Aquarium Breeder free?
Medaka Aquarium Breeder is free to download, with no in-app purchases.
Is 釣り、アクアリウムー水族館経営の世界 free?
釣り、アクアリウムー水族館経営の世界 is free to download, with no in-app purchases.
Do Medaka Aquarium Breeder or 釣り、アクアリウムー水族館経営の世界 have ads?
Both Medaka Aquarium Breeder and 釣り、アクアリウムー水族館経営の世界 show ads.
Which is updated more often, Medaka Aquarium Breeder or 釣り、アクアリウムー水族館経営の世界?
Medaka Aquarium Breeder ships an update every 11 days, and 釣り、アクアリウムー水族館経営の世界 every 6 months. Most recently, Medaka Aquarium Breeder was updated on October 7, 2026 and 釣り、アクアリウムー水族館経営の世界 on October 8, 2026.

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