I use Wikipedia quite a bit, mainly for getting public domain images for classroom PowerPoint lectures. I occasionally run across vandalism, such as this:
That is the entire article on “Fish.” I guess that is what you get when you have a “free encyclopedia that anyone can edit.”
Ninety percent of the time, Wikipedia is pretty good, but I look forward to whatever eventually replaces “Wikipedia” as a better, massive online source of information.
Grace and Peace
GeoChristian 
You must be very quick to have gotten that screenshot, since it was there for less than a minute! Most Wikipedia vandalism these days (but by no means all) is caught by automated editors.
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