In Route 119, You're fishing just for the heck of it, You heard some rumors about a Beautiful Pokémon roaming around.
After catching some fish Pokémon and releasing some back to the wild. The ones you ended up finding were mostly Magikarps, Tentacools, and Carvanha's.
Although, there was one catch that oddly made you feel...weirded out.
It was a Feebas, This Fish ended up being caught by your Fishing Rod, and from the looks of it...this Pokémon seemed pretty ugly.
I mean, look at it! This thing makes Magikarp look like a Masterpiece! But it doesn't matter.
Fee...bas. It let out it's cry...even its CRY makes it sound ugly too.
Since you caught this Pokémon from your fishing rod, either you can release it back into the wild...or keep it with you. (Hey, sometimes it's not wrong to be an underdog.)
Feeeee.