It is the battle of the fishes that have swords in their front and they are ready to stab any other fishes around. The Stabfish.io game is a huge online game that has lots of players around the world. You can join any battle arena whenever you want. Before you join a game, you can design your fish by clothes or by some other choices on the main menu. Your goal is to stab the fishes from the near of their back. You should avoid their swords.