I was in Long Beach CA this week for work and of course slipped away to the aquarium for some new shots. I was there earlier this year but didn't have a very good lens to use (I didn't like my 24-105 F/4L), my 17-55 F/2.8 IS was a much better choice this time around to deal with the low light. I think the shots came out ok considering the typical public conditions (low light, no tripod, and of course they wouldn't turn the pumps off for me, lol). I'll post some of them, the rest of my shots are in my smugmug gallery. Enjoy!
1) Crazy looking Wrasse. Tough to photograph since he was in a cylinder tank, I was lucky that he swam directly in front of me.
2) Big and ugly cold-water fish
3) Nasty looking Moray Eel
4) Bird Wrasse
5) This guy was really tough to photograph since he was at the top of the tank. I was just blindly holding the camera up and took a bunch of pictures, this was the best that I could get.
6) My first Octopus that I've ever shot. This little guy (2-3") was just chilling on the glass.
7) A cool cold-water anemone tank
8) Moorish Idol
The rest of them are in here.
http://parchen.smugmug.com/gallery/3995033