In May 2020, a Japanese livestreamer began a lengthy series using his two pet Siamese fighting fish to play through Pokemon Ruby & Sapphire using a system involving several programs connected to the game's emulator. These programs rely on a webcam to track the fish's movements and determine what actions to perform by where it swims over a map placed behind the fish tank, so wherever the fish swims, it blocks a map square with a picture of a controller input on it and the system performs said input in-game.

On October 3, 2020, during a stream playing through Pokemon Sapphire, one of the fish named Mutekimaru was working on a boulder puzzle in the Seafloor Cavern on Route 128 when it performed a glitch that appeared to have not been widely known in the past. The fish used Strength on a boulder, which moved it and additionally created a duplicate boulder in its place, soft-locking the puzzle until the room is reset. The streamer later figured out how to trigger the glitch himself, and uploaded a step-by-step guide to YouTube on how to perform it.