Aquarium Reef: Water Puzzle

Fill the vessels. Match the numbers. Grow your own reef.

Aquarium Reef is a logic puzzle built on the classic Japanese Aquarium puzzle. A rectangular field is split into vessels, and your task is to pour in water so that all the numbers around the edges match. Fish swim right inside the vessels, so every board looks like a small piece of the sea.

How it works
Read the numbers around the field, then decide which vessels get water and how high it rises. One pour changes what the neighbouring vessels can hold, so each level rewards careful logic. A tutorial walks you through the first steps, and hints are ready when a board refuses to give way.

Puzzle and collection
• Water vessels — the field is divided into vessels that you fill with water
• Edge numbers — the clues around the field that every solution has to match
• Fish collection — gather 50 real fish species
• Home aquarium — furnish your own aquarium with decor you get for stars
• Tutorial and hints — learn the rules step by step and get a nudge on a tricky level
• Looping levels — after level 200 the levels start over

Calm, clear, logical
The look is quiet and underwater, which suits a puzzle where you think through each vessel in turn. The rules stay simple: pour, compare with the numbers, adjust. Your fish collection and home aquarium grow alongside the puzzles you solve.

Pour in the water and fill your reef with fish.