In all my years I've never had two crabs fight... I've had one eat another that was molting, but never two fight. I've had two new crabs in ISO for the last few weeks, and today was the day for them to go into the big tank with the rest of the crabs. Goliath has been in the big tank with three smaller crabs and they all do just fine. In fact, they seem to be best friends. This is why instead of separating Goliath from the smaller crabs, I just bought a bigger tank for them all to live in. Well, I put the two new crabs in the big tank. One was the size as the three I already had, and the other was somewhere between the size of them and Goliath. As soon as I put them in there, the new medium (I still don't have a name) started trying to change into a shell that had been in there. It was one that was supposed to be for Goliath, and he instantly went over and started raising his fighting claw and opening it up and trying to push himself up and make himself tall... is he trying to fight my medium? I took the medium and put him back into ISO just in case, for until I figure out what's going on. Should I give ALL the crabs a salt water bath? I gave the two new guys one the first day I got them... should I give them all another one? I heard that makes them all the same scent so they won't fight. Is this true? I'm really worried... I don't know what to do!