Hello all! Not sure if this is the right forum for this topic, but my boyfriend accidentally brought home some shells from the beach that he thought were empty. There turned out to be thin-striped hermit crabs living in them once he got them home! We've quarantined properly and cycled their new home adequately. I was wondering if anyone had any recommendations as to what fish/corals would be okay to add to our new tank. We've researched this species of hermit crab thoroughly and found that they are one of the more large crustaceans and that they are aggressive.