At least it is temporary, remember, bigger apartment means more and bigger TANKS! and you can always say "But you Promised that after we moved...," heheheh.
The little puffer would love black worms and brine shrimp.
Wow ! you must have a cool manager to let you guys have all those pets in a 1 bedroom! Good luck with the move, Way to sneak those fish in! I Always like to say " I had those fish already" whenever I get busted with a new one! I want to buy a stand that will hold a tank on the bottom and top so I can "sneak" another tank in !