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ARC AquariumNewsCollection Fish & Fish Packs — 125 New Species
Game update

Collection Fish & Fish Packs — 125 New Species

ARC Aquarium · published 19 Aug 2026, 17:20 UTC

All newsPlayers around this dateRead on Steam

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 space, and they sell back for exactly what you paid — a collection fish parks your gold rather than growing it.
  • Buying the same one again does not add a second fish: the one in your tank becomes 2x, keeps its name, and takes no extra space.
  • You can name them and sell them individually. Sell All never touches them.
  • Their detail panel switches to a gold theme, so a rare fish is obvious at a glance.

The Showcase tank holds 125 fish and needs no care at all — the natural home for a collection.

Fish Packs


Eight new packs sit at the top of the Fish tab and buy a whole batch of fish in a single click.

  • The first six hand you one of each of the first 10, 20, 30, 40, 50 and 60 species, once you have unlocked them.
  • The Mixed Pack fills every free tank slot, starting from the best fish you have unlocked and working down.
  • The Luxury Pack fills every free slot with the most expensive fish you have unlocked.
  • A pack costs exactly the sum of the fish inside it — no discount, no surcharge. It saves clicks, not gold.
  • The fish are poured into the tank from above, a few at a time. They arrive newly hatched, so you still raise them yourself.

Fixes

  • The store scrollbar showed the wrong length until you started scrolling. It is now correct the moment a tab opens — in every tab, and in every other scrolling panel in the game.
  • Settings and How to Play could not be closed with ESC. They can now.

Also

  • A new Collection & Packs page in How to Play, translated into all 23 languages.
More from ARC Aquarium

Other announcements

All news
In-game event14 Oct 2026ARC Aquarium 2.5.1: Merge and Feeding FixesThank you for the reports! Version 2.5.1 fixes the two problems you told us about. Your fish, cards and gold are all safe, and there is nothing you need to do. "My merged fish disappeared" No fish were deleted. Every merged copy was added to another fish of the same kind. The game just did a bad job of showing you where it went. Two things made merging look like cards were vanishing: · Merge al…Major update10 Oct 2026ARC Aquarium 2.5: Halloween FestivalHappy Halloween! Version 2.5 brings a limited-time Halloween Festival and a big round of changes you asked for. Your gold, cards and tanks are all kept, and there is nothing you need to do. Halloween Festival (until January 7) · Open the festival with the new pumpkin button in the bottom bar. · Earn candy by caring for your fish: every hungry fish you feed by hand gives +1 candy (up to 10 per t…In-game event8 Oct 2026ARC Aquarium 2.4: Steam LeaderboardsThank you for playing ARC Aquarium! Version 2.4 adds Steam leaderboards, so you can finally see how your aquarium compares with other players. Your gold, cards and tanks are all kept, and there is nothing you need to do. Example leaderboard with sample players. Three leaderboards · Collection: every species, plant and coral you have found in your collection book. · Level: your player level. · P…