I clean all the fish we consume in my lord’s house with lemon water. It removes any residue from the fish, as well as the fishy smell and taste.
Here is how I do it:
Add fish to a large disposable pan and rinse first with cold water and drain. Now fill the pan with cold water just to cover fish. Use 1 lemon for every 3 pieces of fish you are preparing. Cut the lemon in half and squeeze all the juice into water. Drop entire lemon into the water after squeezing out all the juice. Wash each piece thoroughly with hands. Once you’ve washed each piece, allow to sit for at least 10 minutes. Remove lemons and drain off water and rinse once more. All done!

You can either store the fish straight away, or season and store. I normally add the green seasoning once I’ve cleaned with the lemon water and store away in my freezer in Ziplock bags.