B.S.
What I did was go to different thrift shops like salvation army, good will etc... and buy big glass jar, bowl type containers, not huge but big enough for 2-3 gold fish. Buy something cheap to put inside on the bottom like stones, marbles from the dollar store whatever... and have different shaped glass containers with goldfish! It ends up looking super cool. Then I just had a square of my wedding colors fabric underneath the jar for decoration.
To keep the fish get a little blue kiddie tub and fill it with water the day before. You may have to go to a few different stores to get enough fish, I did.
It's cool and cheap.
Congrats