I have scuds. I think they're Gammarus, but as I said above, I'm not sure how to tell them apart, or if Gammarus aren't part of the Hyalella clan. They have survived in the 3 gal aquarium. I have a few of all sizes, from not much bigger than the head of a pin to the size that I was shipped. I put a few more in one of the 10 gal tanks, and at least one is still alive in there. That tank was and still is full of "micro" crustaceans.
