Yes, the fish are new.  I was reading Kesh's blog (http://thewingsofeagles.blogspot.com/ ) and it's designed really well and she has all these cool things on it so I decided to revisit my layout and make a few tweaks.  The idea was to make the blog a bit more classy and pretty, but then I stumbled upon the fish.  I got to choose the amount and the color and such and it just cracks me up so it's likely that the fish will be there for quite some time.  If you haven't already explored the fish, roll your mouse over them and they will follow it.
Anywho, you can expect a few other minor tweaks in the layout coming soon.  But none will probably be as fun as the little fish.  Enjoy!