Is there any kind of things you should notice about a BGK before you buy him that will help determine his personality. you know how with puppies your supposed to pick the first one that comes to you, are fish the same? I have seen quite a few BGK's at my LFS and some of them are out in the open and happy while there has also been some like my own that were hiding when I looked in the tank. would it have been smarter to get the one in the open or can the hiding be changed?