๐งLower-salt version: half the soy, now reduced-sodium, half the oyster sauce, and fresh prawns. Garlic and black pepper carry it. Taste, then add a squeeze of lime before any salt.
๐Buy fish and seafood fresh at the wet market, and freeze it at home if it is for later in the week. Frozen fish and prawns from the shop are often soaked in salt water or phosphate, which adds a lot of salt.