Are you a good swimmer? No, we don't actually need it. Just try to help the little fish not been eaten by other fishes. It must be easy, or... Eat the smaller one and show everyone who you are! We know that you cope with it!
Do you think that fish has a quite life and it so wonderful just to swim through the see depth and enjoy the nature? Hmmm! No! It is really dangerous. The whole time you can be eaten by someone. It is quite easy to play, just use the arrow keys and try to avoid all big fishes. Of course, do not forget about your stomach and eat those fish, who are smaller then you. If you are not afraid, then help this cute little fish to become more and more powerful. There is only one way to the life. Good luck!