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ARC AquariumNewsMajor Update
Game update

Major Update

ARC Aquarium · published 1 Feb 2026, 21:56 UTC · build 21739706

All newsPlayers around this dateRead on Steam
  • Breeding feature has been added to fish. When female fish are fully mature and there is a male fish of the same species, breeding buttons will now appear. You can breed once every 24 hours and get eggs of the same fish species. You must have at least one empty space in your aquarium for breeding. Each egg takes up 1 space in the aquarium.

  • Now when you buy a fish, instead of a fish directly, an egg will drop into the aquarium and you will wait for the egg to hatch. The time will be slightly longer for higher level fish.

  • Fish hatched from eggs will have a random gender. All your existing fish will remain male.

  • If you experience problems with the save system, press the "reset game" button from the settings button. We don't expect this to happen, but we don't want any problems in your gameplay. If you experience a problem, this will be the best thing to do.

  • Adult fish will now provide you with income. You can see this information when you click on a fish. Passive income only works while the game is open.

  • We have made some changes to the fish breeding and earning system.

  • If a fish goes hungry for 24 hours, it will get sick, and sick fish will die if not treated within 24 hours. This is not something you can see in starter fish because they grow quickly and growing fish don't get hungry. (This is how it is for now, but we may change it in the future. Large fish may get hungry.)

  • Touch mode has been added. This causes your fish to flee. It doesn't negatively affect them for now. We added it for your enjoyment.

More from ARC Aquarium

Other announcements

All news
In-game event30 Aug 2026Fish now swim in schools — and they finally stay levelThis update is all about how the fish move. Schooling · Fish of the same species now swim together. Each school follows a leader and holds its formation instead of drifting apart, so a tank full of neons reads as one shoal rather than twenty separate fish. · Formations spread out in depth as well as side to side, so a large school fills the tank naturally instead of stacking into a single flat…In-game event30 Aug 2026Gold overflow fix, 36 new decorations, and fish that swim behind your decorFixed · Gold no longer breaks past 2.1 billion. Any balance above 2,147,483,647 wrapped around into a negative number, and restarting the game reset it to zero. Gold is now stored as a 64-bit value, so that ceiling is gone. If your save already went negative, it is repaired automatically the next time you load — you get the exact amount back, not a rounded guess. · Selling a full collection sta…Game update19 Aug 2026Every Fish Now Speaks Your LanguageLocalization update The 125 collection fish added in the last update had their descriptions written only in English. Now every one of them is described in all 23 supported languages , the same as the original 125 species. · 2,875 fish descriptions, covering the full catalogue of 250 species. · Nothing else changed — no balance, no prices, no save data. If you play in anything other than English…