Comparison

Medaka 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 Breeder

Experience realistic fish keeping by feeding and cleaning your virtual fish. Watch them grow, breed, and inherit traits from their parents. Customize aquariums and collect various fish species.

Highlights
  • Realistic killifish keeping simulation
  • Breed fish and inherit traits
  • Customize aquariums with decorations
  • Collect over 46 types of killifish
  • Missions and rewards system
  • Observation and shooting modes
Features
Read full description

[Game Features] You can experience realistic killifish keeping in your phone. Taking care of your killifish is very easy: just feed them once every three days and clean the tank. The killifish will eventually grow over time and breed with other adult killifish (2cm or larger). The killifish born from the breeding will inherit the characteristics of their parents. A maximum of 50 killifish can be kept. Up to 10 killifish can be kept in one tank, Up to 5 aquariums can be set up. Functions ■Mode switching Default: Information on the killifish and aquarium is displayed, allowing the user to check the status of their care. Observation: Hides the display of information, allowing you to closely observe the aquarium and killifish.    You can also tap on the water surface or the aquarium area to see if there is any reaction! Shooting: This function is useful when you want to hide the information and buttons and take pictures of only the killifish and the aquarium. ■Name your killifish You can name each killifish. You can name each killifish so that even if you have a lot of killifish, you will never lose track of them. Layout of the aquarium You can keep your killifish in your favorite decorated aquarium. There are a total of five types of layouts. Layout types: tank appearance, bottom sand, stones, plants, and ornaments. ■ Shop You can purchase killifish, aquariums and ornaments. There are 46 types of killifish sold in the store! ■Missions You can receive rewards by accomplishing various missions. You can purchase more items such as killifish and aquarium tanks by challenging many missions. ■Revival Chance If you are too busy to take care of your killifish and let them die, don't worry! You can bring them back to life with the Resurrection Chance! Premium Pack (paid feature) Clear ads from auto-display. - Eliminate banner ads - Eliminate interstitial ads Relief mode is released (can be switched). - killifish won't die. Useful functions added - Collective feeding - Collective cleaning All items can be purchased Daily mission rewards tripled 50,000 G present

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 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 ads: Medaka Breeder at none against 釣り、アクアリウムー水族館経営の世界's shown. Medaka Breeder also leads on update cadence (every 5 days vs every 6 months) and iOS requirement (12.0 vs 15.0). On price, 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 Breeder ships an update every 5 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 24, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Medaka 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 Breeder釣り、アクアリウムー水族館経営の世界
PriceFreeFree
Rating4.6 (17 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings17 — better—
Update frequencyEvery 5 days — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size91 MB221 MB
Age rating4+4+
DeveloperTaiho YanaseKenichi Fujii

In-app purchases

None

Medaka 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 Breeder free?
Medaka 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 Breeder or 釣り、アクアリウムー水族館経営の世界 have ads?
釣り、アクアリウムー水族館経営の世界 shows ads; Medaka Breeder does not.
Which is updated more often, Medaka Breeder or 釣り、アクアリウムー水族館経営の世界?
Medaka Breeder ships an update every 5 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 Breeder was updated on October 24, 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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