Fat fish...*POUT*

Yay, someone finally commented! (ok, not finally, but still^^) MY FISHIES LOOK FAT. I've really been over-feeding them like an enthusiastic maniac. or an overenthusiastic motherly figure. or WHATEVER. Humph. on the lighter side of things, I finished revision 4. but i don't get it. How do you see which gas is denser in a balloon? aah, save me!!! J'ai mal a la tete!!!