Someone asked about Mogurnda Adspersa/Mogurnda Mogurnda behavior. I have one of these in my guppy tank and she is like a puppy. (S)He follows everyone who approaches the tank and I'm sure she would take food from my fingers if I had the patience. Took her about an hour to settle in, after that she became the star of the tank. I think it's a she, and about three inches long. I've had her just over a week, but she has grown a bit. They are soooo pretty. Like a killifish on steroids. And hardy, too. The LFS girl dropped her, and broke the little jawbone. It swelled and looked pretty gruesome, but with clean water and melafix, it is getting better every day and she never refused a bite of any food, even pellet and flake, seaweed, bloodworm etc. Amazing fish.