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Press kit

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About the game

Jawless Fishtank is a cute idle game where you raise your own Sacabambaspis, a real jawless fish that lived around 460 million years ago and became an internet favorite in 2023. Buy baby fish, feed them, and watch them grow from baby to old age in real time. Sell a well loved adult for coins or see how long you can keep one alive. Once your bank is full, try feeding them exotic foods like chili and lemon for bigger reactions and faster friendship.

It was made by FiveFour Games together with Jawless Fish, who make Sacabambaspis plushies (jawless.fish). It showed on the Jawless Fish booth at Phoenix Fan Fusion in June 2025 and launched that July.

Features

  • Six kinds of Sacabambaspis, including a Color Changer that takes on the color of what it eats
  • Ten foods with different effects on hunger, health and friendship
  • Fish grow and get hungry in real time, even while the game is closed
  • Coins and gems to collect, a tip jar that fills while you're away, and decorations to buy
  • No ads, no accounts, no data collection

The studio press kit at fivefour.games has more on FiveFour Games.