I have always been fond of this particular image, because although it is obviously a hoax, it is a hoax that has been manufactured with one particular purpose in mind - to make people laugh. Because it is a hoax so unutterably ludicrous that one cannot, for a moment, imagine that anyone would take it seriously.
You would be surprised.
A few years ago I was working as the deputy editor of a tropical fish magazine called Tropical World. The editor was a very nice bloke, but he had health problems, and a weakness for the sauce which eventually killed him, so I ended up running the show for a considerable amount of the time.
One day when the editor was in hospital and I was once again in charge, I received an email from someone attaching this picture. Now, I had only ever seen it before in a wonderful book called Animal Fakes and Frauds by a bloke called Peter Dance, and was completely unprepared for a letter from a bloke saying that he was in the throes of setting up a coldwater fishtank, with some unusual inhabitants, and was looking for a furry trout to complete his collection.
The frightening thing was that this geezer was obviously somewhat of a fish afficianado (a piece of alliteration that sounds better read out than it does writen down). He already had some rather impressive North American coldwater fish (including bullhead catfish and pumpkinseeds, which are both technically illegal to keep) and an expensive filtration system.
So maybe I was once again suffering from the sin of pride through prior knowledge. There are, after all, hairy frogs. Why not furry trout?