Merge Fish

Merge Fish is a free browser puzzle where you act as a fish scientist and combine fish on a square grid. The goal is to merge three fish that share the same color and number to breed a new type, working from fish that sit around the playing field into the cells on the board.

The goal and the grid

The playing field is divided into square cells. Around the board are colorful little fish you can move into empty cells. Each fish has a color and a number, and when you bring three fish with the same color and number together they merge into a new type. That basic loop is the whole game: place, merge, and keep enough room on the board.

Merge Fish and the breeding experiment

Think of each successful merge as a small breeding step. Early merges clear low-number fish and create room for higher-numbered results. The more you merge, the more complex the board becomes, because higher-number fish take up the same space but need matching partners of the right number.

Thinking like a fish scientist

Keep similar fish near each other so you can form groups of three when a slot opens. Prioritize merges that free up multiple cells at once and avoid isolating single high-number fish away from potential partners.

Moving fish with a click

You move the fish around the board with a click of your mouse. Click a fish at the edge and place it in an empty cell to set up a group of three.

You can play Merge Fish online for free. It runs right in the browser with nothing to download, and Yup7 has many more free games. Find more in the Puzzle Games collection on Yup7.

Questions Players Ask About Merge Fish

Is Merge Fish free to play?

Yes, the game is free to play on the site.

Which devices does it work on?

It plays in the browser on computers, Chromebooks, tablets and phones.

How hard does it get?

It gets trickier as the board fills up, because you need room to bring three matching fish together.