GotButterflies wrote:They are so cute!! I'm not sure what an Aussie is, but they remind me of my E's. The one looks so tiny!

Yeah, they do have similar traits and breeding patterns. Many believe they closely related compared to other crabs.
ErikRasmussen wrote:and are those aussies? that one is so small
Yep, unless Australia has begun importing exotic species.

Its pretty common here to offer them small, and around the size of a 5 cent coin - which is around a micro/teeny size. Rather cute, but they quickly grow to a small in a couple of moults anyway.
(Aussies are naturally a smaller species as well)