So that they can eat, and some so that they can continue to breathe. Also for mating, and temperature regulation (warmth of waters is different in different areas fish, are cold-blooded)
yes it does
they swim with their fins.....
Fish swim in order to move from place to place for whatever reason they choose.
Dolphins have to chase fish in order to be able to eat.
it pushes into it's place that is important to move
because you want be able to move
Yes. They are able to flow.
Debatable, but possibly mouth, gills, and fins would be the most important, as without them the fish would be unable to eat, breathe, or move.
Most species of fungi are not not able to move on their own. However, some are able to forcibly discharge their spores, such as Pilobulos. Chytrid fungi have a flagellum on their spore; thus, they are able to move on their own.
It is important to keep the iner works of the cell in place, so they not move from their place of work.
if you have family problems you should be able to move out when your 17 as long as you have a place to go.
Without fins, fish would not be able to move around (swim) and live.