FW crabs, more seahorses!

[Youkai]

Hey all,

We got some really odd crabs in at work, both with trade names that were seemingly pulled out of a hat. They are 'rusty crabs' and 'mosiac crabs'. Both are brownish, the mosiac's having a bit of black. The mosiac crab's name baffles me - considering mosiac crabs are a well known, and dangerous (venomous) marine crab.
Anyway, both species are doing well in FW, but I don't know if they should truly be in brackish or not.
Has anyone seen any recent imports with proper names...? I'd like to research these guys.

In other news, 30+ new baby seahorses this morning! WOOT!