this was quite creepy, though not so much that it scared me, which is good. I kinda expect when you get the fish that needed tumor or brain that you have to get out and get your own tumor and brain from your neighbor, but no you just buy it online XD
would be interesting if there's a continuation or extension of the story where once you get the mystery fish(?), you need to feed it the other fish according to what the mystery fish craves, and if you fail you get the bad ending or something where you get transformed into a fish and get purchased by someone else, and if you succeed the mystery fish transform into some kind of human, so the title works on both ending. just food for thoughts