ARC Aquarium

Turn an empty tank into a living aquarium of your own. Buy fish as eggs, hatch and raise them in real time, then sell grown fish for profit. Breed new eggs, complete a 250-species catalog, and shape a calm aquarium that rewards both quick check-ins and long-term care.

🐠 Hatch, Raise, Sell

• Every purchased fish arrives as an egg—hatch it and watch it grow
  
• Feed fish to earn EXP and speed up their visible growth
  
• Sell grown fish for profit, or lock favorites so they can never be sold by accident
  
• Discover 250 freshwater and saltwater species, each with its own appearance, value, and unlock level

🥚 Breed and Complete Your Collection

• Pair an adult male and female of the same species to produce new eggs
  
• Raise your own fish instead of buying every new resident
  
• Your permanent catalog records every species you discover while keeping undiscovered entries hidden

🪸 Design a Tank That Pays Back

• Unlock 125 decorations and arrange, resize, layer, or sell them freely
  
• Every placed decoration generates passive gold while the game is open
  
• Choose from 23 backgrounds and customize the interface color and transparency

🏆 125 Collection Fish

• A separate Collection tab adds 125 showcase species—250 fish in total
• They arrive fully grown and need no care: they never grow, eat, fall sick, or breed
• They sell back for exactly what you paid, and duplicates stack into a single 2x fish

🐟 Four Tanks, One Aquarium

• Unlock up to four tanks and move fish between them—each keeps its own background and decorations
• The Showcase tank holds 125 fish and needs no upkeep—the natural home for a finished collection

📈 Progress That Respects Your Time

• Fish and eggs continue progressing while you are away, for up to 24 hours
  
• Level up to unlock new fish, decorations, backgrounds, and more tank capacity
  
• Claim rewards throughout a 30-day daily login cycle
  
• Complete 26 in-game achievements and track every unlocked milestone
  
• Fish packs buy a whole batch of fish in a single click

🎮 A Calm Aquarium to Keep Beside You

• Play actively for a few minutes or leave the aquarium running while you work or relax
  
• Clean the tank for bonus EXP and care for sick fish; neglected fish can be cured and never die
  
• Capture clean, UI-free aquarium screenshots with the ARC Aquarium logo
  
• Available in 23 languages