Thank you for playing my game! I’m very happy to hear that you enjoyed it.
I’m sorry for the confusion during the game. You can change the food size by right-clicking the mouse.
Larger carp become hungry much faster, so in the early game it can actually be a good strategy to use small food and avoid growing them more than necessary in order to keep more carp alive.
On the other hand, in the later stages, larger food becomes almost essential for keeping the big, hungry carp alive.
Even so, saving six carp is quite an achievement! Well done!