I finally have a few fish in my tank..a bicolor blenny and a yellow tang and bought some frozen mysis shrimp to feed them. I thaw out a cube of shrimp in some tank water and soak in garlic and then feed them. The problem is that it is way too much food for just 2 fish. If I keep it in a specimen cup in the fridge, would it be ok to feed this to them over the next 4 or 5 days or would it go bad?