Okay, I need major help! Tracy
take alook at this one. maybe if you pm her she can explain how she did it.
Would she go for a fondant catfish instead? If so, you could use a mound of cake on top of the sheet cake and ice that to look like a big splash of water and then set the fondant fish on top of that. I've seen some copper-looking molds of fish that are smaller than most cake pans. Something like that would be perfect to mold the fish out of. After removing it from the mold, you could even bend it upwards on the ends and let it dry.
If you look up fish pan on ebay there are usually lots of them on ther. Good luck!
sugarcraft sells some like this...but I would make them aware that the fish might not look exactly like a catfish but you will do the best you can. http://www.sugarcraft.com/catalog/pans/novelty.htm and scroll down to fish/boats/water pans
try this link for a help on how to make a 3d fish cake
http://www.cakeworkscentral.com/scrapbook/fishcake.htmand this cool fish cake
I am the one who did the shark cake and it was the first time I had done something like this before. I made my normal sheet cake and then made another cake cut it into 3 equal pieces and iced and stacked them then put it in the freezer for about 1 hour. I wanted the cake hardened but not too hard because it is difficult to carve when it is rock hard. I just hand carved the cake the the way I roughly wanted it to look and then iced it on top and placed my MM fondant over top and worked it into the desired shape. It was a learning experiance because I have no concept of 3D cakes but is was fun and everyone LOVED it.
I doweled the sheet cake and I also doweled the shark so that the shark would not slide apart and so that it would not sink into the layer cake since it was fairly heavy.
I just worked a bunch of icing up onto the back to make it look like the shark was coming out of the water.
If you need any help let me know and I will do my best
Thanks for everyone's help and suggestions. I told her this morning that I wasn't going to be able to do the cake for her. I think I could do it, but I'm also doing the groom's cake for my brother's wedding the same day, so I don't want to overload myself. She understood and was fine with it. Thanks again for your help!