Reset the simulation back to its original state by clicking the button.
Fish simulation specifics:
The yellow fish
are female and the reddish fish
are male. Click and drag a fish to move it into a pond, then watch it
swim! (Be careful to click directly on the fish and release it only in
the pond. If you drag something else or release a fish outside the pond,
this simulation may not work properly. If you encounter problems, just
click the Reset button.) You can also move fish from one pond to another
The pie chart to the right of each pond displays the ratio of
male fish to female fish in that pond. This may help you reach your
When each pond has the proper ratio AND all fish are out of the
large tank, the tank border turns from red to green. That means you have
found a correct solution!