Topic on Talk:Legendary Catfish
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Seconding Looney Toons suggestion, and rewrite the paragraph to "Not every fictional catfish is a Legendary Catfish, and some of the examples below aren't actual catfish (or even aquatic animals at all), as this trope is not about the animal but about prey animals that for some reason have become infamously difficult to catch or kill, and it's named after the species most frequently targeted under this trope"