I've got 2 ghost shrimp in with my Betta right now. I haven't been feeding them anything, they've been munching on whatever's stuck in the gravel and the plants I think. Yesterday, one swam up to the top, so I dropped a small bloodworm in for him. He grabbed it and managed to take it over to the heater cord and pull it down with him. It was a little bit hilarious, because these bloodworms float really well, and the shrimp is pretty buoyant itself, so it kept swimming an inch or two down and then getting popped back up to the surface by the food. By the time he was done with it, his little brown belly was like 3 times its original size. His sides didn't look bloated, but he's see-through and you could see his gut. He's been active and it didn't look like the big meal hurt him at all... Anyway, should I make it a point to feed them a little bit of bloodworm or are they able to find enough food at the bottom of the tank to sustain themselves? I haven't seen the other one eat ever, but he's just as happy and active as the well-fed one.