A fish called Lala is not a new John Cleese and Charles Crichton movie, but the fish that discovered a glitch in Pokémon Sapphire that no one had found in 18 years.
Lala is a Siamese fighting fish (without twin) and found a glitch in Pokémon Saphir that no one had discovered in 18 years since its release. Lala played that Pokémon part for almost 100 daysuntil she came to the discovery.
Since Lala is a very clever, but not a genetically engineered fish, she of course neither actively nor deliberately plays the game. With the help of a Tracking camera and one Document on which the input options are in delimited fields, Lala gives the orders. The game carries out the command that is on the field that she swims over. The Japanese YouTuber Mutekimaru is the owner of the fish and shows the find and also the "fish control" in a video:
The fish was just with that VM strength puzzle in the deep sea cave on level 8 busy when she succeeded to duplicate the stones belonging to the puzzle. The stones have to be moved in a certain order, explains Pokémon expert Eclipse on Twitter:
Because Lala's inputs were completely random, the likelihood that she would move the stones just right was pretty slim. But somehow the fish discovered the glitch. The YouTuber was able to duplicate the stones, so the find is real and was only made after 18 years.
Incidentally, Lala is not the only one entrusted with the task of ending the game, three more fish are supposed to play through her Pokémon Saphir. Maybe Nintendo would like the fish hire as a beta tester. The scientific name of this species is incidentally "betta splendens". You can't think of something like that.