Heat about 2cm (1in) water in a large pot. Finely slice ginger. Chop some into matchsticks so you have about 1 tablespoon of matchsticks. Leave the remainder as slices.
Place the ginger slices (save the matchsticks for later) in the base of a steamer or strainer. Place fish on top of ginger. Making sure the 2 fish fillets aren’t touching.
Pop the steamer / strainer on top of the boiling water. Cover with a lid and steam for 4-6 minutes or until the fish is cooked and flakes when touched with your finger.
Meanwhile, combine soy, chilli and ginger matchsticks in a small bowl.
When the fish is cooked transfer to 2 plates and pour over the soy & ginger dressing. Serve with lime and coriander.