Not to hijack your thread but here's mine. It's also about 5". I can never tell the diff between males and females.
I'll have to get a pic tomorrow of her above one of the Gulf Toadfish that I have. That's right. I have goldfish and saltwater fish together! I also have a brackish fish and an apple snail in there. Everyone seems to be doing fine. I'll try to post a pic tomorrow if I can find a toadfish (they like to hide) and if I can get the goldfish to stay still long enough.