MyFragment.java

public class MyFragment extends Fragment {
    private static final String ARG_CAUGHT = "myFragment_caught";
    public static MyFragment newInstance(Pokemon caught) {
        Bundle args = new Bundle();
        args.putSerializable(ARG_CAUGHT, caught);

        MyFragment fragment = new MyFragment();
        fragment.setArguments(args);
        return fragment;
    }
    ...
}