When you do that the fish will die. That is because it will take too much water in it and die from it, or rather, the fish's cells will take too much water in.
Answer:
This is most likely not the answer you're looking for, but I believe the main function of any organism's reproductive system is to reproduce.
Explanation:
4 i guess........................
The two-layered sac surrounding the heart is the pericardium.
Hope this helps!
