Pass recovered image from firebase to another Activity

I have a class that generates a feed of photos downloaded from firebase, and I have another class for comments, I would like to retrieve these photos from the feed in the comments for a preview:

First class:

public class FeedFragment extends Fragment {

private RecyclerView recyclerFeed;
private AdapterFeed adapterFeed;
private List<Feed> listaFeed = new ArrayList<>();
private ValueEventListener valueEventListenerFeed;
private DatabaseReference feedRef;
private String idUsuarioLogado;



public FeedFragment() {
    // Required empty public constructor
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_feed, container, false);

    //Configurações iniciais
    idUsuarioLogado = UsuarioFirebase.getIdentificadorUsuario();

    feedRef = ConfiguracaoFirebase.getFirebase()
            .child("feed")
            .child("postagens");



    //Inicializar componentes
    recyclerFeed = view.findViewById(R.id.recyclerFeed);

    //Configura recyclerview
    adapterFeed = new AdapterFeed(listaFeed, getActivity() );
    recyclerFeed.setHasFixedSize(true);
    recyclerFeed.setLayoutManager(new LinearLayoutManager(getActivity()));
    recyclerFeed.setAdapter( adapterFeed );

    return view;
}

private void listarFeed(){

    valueEventListenerFeed = feedRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            for ( DataSnapshot ds: dataSnapshot.getChildren() ){
                listaFeed.add( ds.getValue(Feed.class) );
            }
            Collections.reverse( listaFeed );
            adapterFeed.notifyDataSetChanged();
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });

}

@Override
public void onStart() {
    super.onStart();
    listarFeed();
}

@Override
public void onStop() {
    super.onStop();
    feedRef.removeEventListener( valueEventListenerFeed );
}

}

Class comments

public class CommentsActivity extends AppCompatActivity {

private EditText editComentario;
private RecyclerView recyclerComentarios;

private String idPostagem;
private Usuario usuario;
private AdapterComentario adapterComentario;
private List<Comentario> listaComentarios = new ArrayList<>();

private DatabaseReference firebaserRef;
private DatabaseReference comentariosRef;
private ValueEventListener valueEventListenerComentarios;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_comentarios);


    //Inicializa componentes
    editComentario = findViewById(R.id.editComentario);
    recyclerComentarios = findViewById(R.id.recyclerComentarios);

    //Configuracoes iniciais
    usuario = UsuarioFirebase.getDadosUsuarioLogado();
    firebaserRef = ConfiguracaoFirebase.getFirebase();

    //Configura toolbar
    Toolbar toolbar = findViewById(R.id.toolbarPrincipal);
    toolbar.setTitle("Comentários");
    setSupportActionBar( toolbar );

    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_close_black_24dp);

    //Configura recyclerview
    adapterComentario = new AdapterComentario(listaComentarios, getApplicationContext() );
    recyclerComentarios.setHasFixedSize( true );
    recyclerComentarios.setLayoutManager(new LinearLayoutManager(this));
    recyclerComentarios.setAdapter( adapterComentario );

    //Recupera id da postagem
    Bundle bundle = getIntent().getExtras();
    if( bundle != null ){
        idPostagem = bundle.getString("idPostagem");
    }

}

private void recuperarComentarios(){

    comentariosRef = firebaserRef.child("comentarios")
            .child( idPostagem );
    valueEventListenerComentarios = comentariosRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            listaComentarios.clear();
            for(DataSnapshot ds: dataSnapshot.getChildren()){
                listaComentarios.add( ds.getValue(Comentario.class) );
            }
            adapterComentario.notifyDataSetChanged();
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });

}

@Override
protected void onStart() {
    super.onStart();
    recuperarComentarios();
}

@Override
protected void onStop() {
    super.onStop();
    comentariosRef.removeEventListener( valueEventListenerComentarios );
}

public  void salvarComentario(View view){

    String textoComentario = editComentario.getText().toString();
    if( textoComentario != null && !textoComentario.equals("") ){

        Comentario comentario = new Comentario();
        comentario.setIdPostagem( idPostagem );
        comentario.setIdUsuario( usuario.getId() );
        comentario.setNomeUsuario( usuario.getNome() );
        comentario.setCaminhoFoto( usuario.getCaminhoFoto() );
        comentario.setComentario( textoComentario );
        if(comentario.salvar()){
            Toast.makeText(this,
                    "Comentário salvo com sucesso!",
                    Toast.LENGTH_SHORT).show();
        }

    }else {
        Toast.makeText(this,
                "Insira o comentário antes de salvar!",
                Toast.LENGTH_SHORT).show();
    }

    //Limpa comentário digitado
    editComentario.setText("");

}

@Override
public boolean onSupportNavigateUp() {
    finish();
    return false;
}

}