This is my entry , before I pull all of my hair out! WALLS. Everything else goes! You can add floors, half walls, platforms, roofs, windows, paint, literally ANYTHING except new exterior walls. MY WALLS ALL MUST STAY. DO NOT TOUCH MY WALLS. It''s only called fish because the first floor looks like a fish. You don''t have to make it fish related. That defeats the whole purpose. Do literally anything to it. Post to #SimsieFish when you''re done :)