Melody,
The Juveniles can go skitzo sometimes. It's a shame, clowns are beautiful fish, and have great personality. A bit too much in some cases, as you found out. He thought he was so tuff he'd swim around on the floor
But seriously, sorry to hear of your loss...Atleast you hadn't got attached to him yet. My friend still has my old Percs, sold them with my last tank, and I still have to visit every couple weeks to see them. I love clowns, and I hate to see any of them in trouble, or any other fish for that matter.
I've made it a practice to cover my net with one hand when i'm introducing a fish. I've almost had several fish jump out before, including a Blonde Naso I was helping a friend acclimate, now that would have been fun. They seem to freak out with no water in the net(as any fish would).
I don't know if you've had a Clown before, but they are really nice fish to have, I hope you take a second chance with another. Introduce 2 at once if you can, once they get used to each other(and one becomes female) they'll act like best friends in the tank. They will follow each other around, sleep together, eat together, possibly mate together, atleast most of them will. They also know when feeding time is, and will even eat from your hand if they like you.
Mine would even playfully nip at my finger if i stuck it in the water.
I can't say the above is true for all Clowns, but I've found it to be true with the True/False Percula varieties.
Anyway, good luck, and I hope you get the chance to enjoy these fish again.
Thanks,
-David-