I added 2 new silver dollars to one of my 55 gal. tanks so that the one that I had would come out of his plant where he likes to hide! It was so cool.....he was eyeing them up as they were floating in the bag and when I finally let them swim free, he just kinda fell in with them in the most beautiful display of synchronized swimming I've ever seen as if they'd been together forever. Brought a tear to my eye!! :'( Just thought I'd share!