Hi, I was on www.liveaquaria.com and I was looking for a nice addition to my 10 gallon tank. The clam I saw on the site was a maximum of 2 inches long. I have 2 male guppies, a dwarf gourami, a small catfish (I don't know the exact species), and I will soon have a (I think female but I can't be sure because it is too small to have color yet) guppy. My lfs doesn't carry clams and only carries the basic fish. Would a small clam be a good addition?