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ARC AquariumNewsPatch Notes

Game update

Patch Notes

ARC Aquarium · published 22 Feb 2026, 13:21 UTC

All news Players around this date Read on Steam

Audio
New background music tracks have been added.

UI & localization
A “How to Play” screen has been added. You can open it by clicking the question mark (?) button shown below.

More from ARC Aquarium

Other announcements

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…