I had 2 clown fish, and all they ever did was swim in the top left hand corner of my tank. I had one for 2 months and one for 3 months. They decided to jump out of the only small opening of my tank, both jumped at different times. So good luck!! As far as I know they swim funny and that's normal. That's why they are called Clown Fish. As for jumping out, they are not suppose to be jumpers, but mine where. I am done with Clowns. :-p
Fish Sticks, the best thing you can do with your dead fish.