Announcement
Your mermaid secretary is online!
Merge Game is on! Recycle and win a selectable SSR Mermaid! Bug removal are underway to ensure a safe environment.
Read announcementSteam
Fish Collector: Aquarium Story
Also known as Fish Collector: Aquarium Story, fcas, fish collector aquarium story
Run your own aquarium and evolve fish into mermaids! Fish Collector is a relaxing aquarium tycoon game that blends fish farming, idle resource production, match-3, and merge gameplay to build your fantasy ocean world.
Last update
9 Jun 2026
Players now
0
Latest update
Update history
Browse past updates and patch notes for this game.
5 updates
December 2025
- Leopard On Duty・Sweetie ArrivesTaffy the ocelot server rolls in on her inline skates. Ready for her cheerful service? The Guild Star Chest is about to rotate, so make sure you redeem your rewards before it’s gone. The Christmas event is also on its w…
November 2025
- Choose Your Favorite MermaidBlack Friday is here, bringing the final and biggest deals of the year! Enjoy the limited-time Selectable SSR+ Flash Deal at 25% off—don’t miss out! This Battle Pass introduces two veteran mermaid secretaries ready to h…
- Day of Salmon / NEW Illusion SSRNovember 11 isn’t just Singles’ Day or a shopping festival! It’s also Japan’s “Salmon Day”! The kanji for salmon, “鮭,” hides a fun secret: the right side “圭” can be split into “11 11.” Join our salmon heiress Sandra and…
August 2025
- Info OptimizationBeach Cleanup- Reward Screen Info Optimization
Gallery
In-game media
Achievements
Community progression
Top picks from 15 Steam achievements, sorted by player unlock rates.
- Showtime DebutComplete Chapter 2 of the Show.10.4%
- Meowverse MasterUnlock 10 characters in the Meowverse Gallery.10.3%
- Galaxy MasterUnlock 10 characters in the Galaxy Gallery.10.3%
- Desserts MasterUnlock 10 characters in the Desserts Gallery.10.3%
- Polar MasterUnlock 10 characters in the Polar Gallery.10.3%
- Pirate MasterUnlock 10 characters in the Pirate Gallery.10.3%