Do they look foreign to you?
Maybe... but the juvenile specimens can be found in our LFS.
Unless you own a large pond or some private lake, your
10ft by 3ft tank is still not fitting to house them.
Here are some photos
http://bigfishesoftheworld.blogspot....s-spatula.html
http://www.flickr.com/photos/dave_irving/3748890305/
http://www.jjphoto.dk/fish_archive/w...aima_gigas.htm