How do you get fish on sims 2 pets for ps2?

Depends on what type of fish. If you want fish you can eat, then go to the object catalogue and then click miscellaneous. If you want a goldfish, I think it's at the town square. It's either at the Pet Emporium or the pet toy store after a few upgrades. I can't remember. All I remember is I somehow got a goldfish in a bowl when I went shopping at the Town Square