The Red Dead Redemption 2 (print) game guide suggests there’s a legendary Channel catfish to be found out in the swampy wilds of the game – somewhere. So far, players haven’t been able to track down this fabled fish, but now at last, with the RDR2 PC release, it’s been found – but only in the game files.
YouTuber MrBossFTW has posted a video revealing that you can actually spawn the fish in the game (which you can check out below), with two different versions appearing in the game’s files – smaller and ‘XL’ – both with the term ‘channel catfish’ in the file names. The YouTuber shows the scary XL version in his video, sporting a mangled shape and sickly pink hue.
MrBossFTW says he was able to spawn both versions, meaning that, while it seemed to do some slightly strange things to his game, the legendary channel catfish does seem to be a real thing. But, it doesn’t seem that there’s a related quest or way of catching it in-game.
Original source: https://www.pcgamesn.com/red-dead-redemption-2/rdr2-fish