Proper way to serve fish

According to Akira Kurosawa, the proper way to serve a whole fish is with its head pointing to the left and its open belly facing the guest. So it's easy for the guest to pick up the fish from its belly.

The only occasion where a fish is deliberately served with its head pointing to the right, is when the guest is about to commit Hara-kiri (ritual suicide), because that's the only scenario, it's offensive to show the open fish belly to someone who is about to cut his own belly.