I have a 29 gallon tank set up with one rainbow, 3 guppies, and 1 bloodfin tetra. I was wondering if a freshwater clam would do alright and also if it is safe to order through the mail. I haven't seen them at any of my LFS, but I get a cataloge. (Doctors Foster and Smith) They have clams and I thought it would be really neat to have one in my aquarium. Also, any suggestions on what else to add to that aquarium. I was thinking of adding 6 neon tetras, but not really sure of what else. Any help would be appreciated. Thanks