If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Fishing Tactis is an unusual and rare mouse skill game. Here, you need to find the group of same type fishes and draw a shape with free hand drawing. The game will check that all the fishes covered by the shape are same or not?
If the shape is covering same type of fishes, they will be merged intro one. In order to win this game, you need to reduce the number of fishes to minimum possible.
Use mouse to draw shape on the same colored fishes.