[Kaderin Triste]

Okay that fish rule is so dumb! But in general 1 pet per apartment isn't a bad rule...but still sucks.
My complex switched to a "no pets" apartment complex December 2015, but I had my cats prior to that, so I can keep them, I just can't get any other pets.
But I think that small fish like a Betta or Goldfish are probably fine as long as they aren't in some giant tank.