Developer posts and news about this game.
This 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
Fixed 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 automat
Localization 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 25
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 nev
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 anythi
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 limi
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 e
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
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 1
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
bug fix
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 an
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 gam
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 aquar
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 cu
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 si