Ok, while looking for those, I found these. I wonder if they can be placed in the fuge (I have a 100g fuge with a HUGE ball of Chaeto, 150 lbs LR, and 150 lbs of LS) and I wonder if they would reproduce?
Reef Nutrition - Live Mysid Shrimp
And for the silversides, I found this place:
Menidia beryllina, Inland Silverside
They really aren't much more expensive then feeder goldfish from PetCo...