There appears to be a double fish “glitch” in #ESOTU. I was fishing in Wrothgar gathering some information for my fish list the other day. I noticed I was getting more fish than usual. At the time, I thought it might have been because I recently added more champion points to the plentiful harvest line but noticed I got less fish later (but it was in another zone). Others have also noticed that the double fish “glitch” as well and were talking about it at length in the Wrothgar zone chat (NA Server).