Game update

Patch Notes

ARC Aquarium · published 21 Feb 2026, 09:57 UTC

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Gameplay
Fish death removed – Fish can no longer die from sickness. Sick fish stay sick until cured.
Decor passive income – Decors now give passive gold while the game is open. Amount is based on the decor’s required level (e.g. level 3 = 3 gold/hour). Does not apply when the game is closed.
Offline EXP limit – Offline EXP cap reduced from 30 days to 1 day.
Fixes
Fish EXP bug – Resolved an issue where fish sometimes did not gain EXP after loading the game.
Fish EXP reset – Fixed a save/load race condition that could reset some fish to 0 EXP.
Code cleanup – Removed an unused variable that triggered a compiler warning.
UI & Localization
Decor passive gold text – Each decor in the store now shows its hourly passive gold income.
Translations – Added the passive gold text to all 23 supported languages.
Technical
Save system – Improved save/load order to avoid overwriting fish data with an empty list during loading.
Load flow – Fish loading now waits for required managers before clearing and respawning fish.

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…