Oh, you guys are crazy.
Apparently, (from what I have heard) pet oscars, pacu, etc. taste alright. Need a lot of spicing or a stronger sauce because they don't have the natural taste? Or something to that effect. There is a guy who goes around to fish shops and takes the big fish that people dropped off and aren't selling. He then has a cook-out with the family. I can see where he is going with this. Better to humanely put them out and then put them to use than have them suffer in a tiny aquarium due to the lack of research of the original owner. Whether or not I agree, is another story and I don't think I could bring myself to eat it.
And about putting your fish in a mold, just find some art student for $20, I'm sure they could fix something neat for you. Or send it to me and I'll do it. haha.
55gPLANTED:Rainbows/Loaches/Garras|30gVIV:Crestie|20gL:Leos|10g:Pearl Fighter|5g:Betta|5gChi:Spark Gourami/Badis|5g:ADF|2.5g:Betta|2.5g:Betta|