ok... there were a couple of idiots who answered your question...
PLEASE DISREGARD their answers.
unfortunately, these are symptoms of a "dying fish" and the chances of it living are 1-20%
if you have freshwater tank, i suggest you do a 20% water change asap.
Are the other fish sick too? Even if they dont have symptoms, they can catch it from the water their in.
The best thing is to turn your fish tank light off... leave the temp. its supposed to be, and allow to see what happens.
I am imagining its in a fish "tank" and not a bowl.
Also, the guy who posted about dropsy may be right. I know this product Called TANK BUDDIES "fungus clear" and it will remove dropsy, fin rot, mouth rot, and such things. its 3.24 at your local walmart
Good luck with your fish... *and im sorry about the other idiots*