Just wondering if anyone has one of these that stands on his tail for long periods? We have had him for quite some time but now I know that he can go into hiding, etc. The tail stand is not something I have seen before. Nothing out of ordinary with tank chemistry or other fish. Everyone ate but him this a.m. but he has become a late sleeper for a while. Just would like to know if you have seen this from other wrasses and if there are more surprises I should expect. Thanks.