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…
125 New Collection Fish The store now has a separate Collection tab with 125 showcase species, bringing the catalogue to 250 fish in total. They exist for one reason: to give your late-game gold somewhere to go. · A collection fish arrives fully grown — no egg, no waiting. · They never grow, never eat, never fall sick and never breed. There is nothing to look after. · They still take up tank sp…
This update is about cutting down the busywork and tidying up the interface. Sell All A new Sell All button appears in the bottom bar whenever you have grown fish ready to go. One click sells every grown, unlocked fish, and it tells you how many and how much before it does anything. Locked fish are never touched. Name your fish Click any fish and you can give it a name. Naming a fish locks it a…
Fixed cures not working: a cured fish now stays healthy instead of falling sick again seconds later. Fish now need 7 days without food to get sick, up from 24 hours, and time spent in a background tank no longer counts against them. Fish that are currently sick under the new limit heal themselves automatically.
125 new decorations The decoration catalogue has been rebuilt from the ground up. The old 86 decorations are gone, replaced by 125 hand-drawn aquatic species — freshwater plants, seagrasses, macroalgae, hard corals, LPS and soft corals, each with its real name in the shop. Your existing decorations will look different. They keep their spot, their size and their earnings, but the artwork underne…
The Multi-Tank Update Your aquarium just became four aquariums. This update adds multiple tanks, offline earnings, weekly goals, booster packs and 14 new backgrounds — plus a rebuilt progression curve so the full collection lasts. Multiple Aquariums · Unlock up to 4 separate tanks from the new Tanks tab in the store · Each tank keeps its own fish, decorations and background · Switch between tan…
This is our largest update yet! ARC Aquarium has been expanded with 125 fish species, a permanent collection catalog, new rewards, achievements, redesigned menus, improved performance, and many quality-of-life features. ## 125 Fish to Discover - Expanded the aquarium from 85 to 125 unique freshwater and saltwater fish species. - Added individual names, descriptions, prices, growth values, and u…
Patch Notes Gameplay Feeding behavior improved: Only hungry fish near the food swim toward it, instead of the entire tank rushing at once. Right-click to feed: Hold the right mouse button to drop food (documented in How to Play). Decor Decor passive gold: Placed decor earns gold every 10 minutes while the game is running. Visual feedback: Floating gold text and a status panel when selecting dec…
This update gives the game a cleaner, more modern look and improves how your fish move. User Interface - Redesigned the entire UI with a refreshed color palette and consistent, modern styling. - New compact info panel (level, money, EXP, tank capacity) that takes up less space and is easier to read. - Reworked the fish detail panel: action buttons now stack neatly with no empty gaps. - Cleaned…
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.
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 issu…
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, a…
Hello dear aquarium enthusiasts, Changes made; · The feed button has been removed. You can now feed by right-clicking anywhere you want. You can hold the right mouse button. Food is now free and unlimited. · Level-required items in the store will now appear locked. (Done to create curiosity.) · The game can now run in the background. · New sound effects and settings have been added. Purchase an…
Now your aquarium can get dirty. Features you didn't see in the trailer await you. The game will continue to be developed. Features planned for future additions: Ability to rotate decorations left and right. Adding sound and sound settings to the game. Fish will be able to get sick and you will be able to treat them. Rewards will be unlocked based on your playtime. Automatic feeding and automat…
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Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.