Put enough cooking oil in a sufuria. Allow it to heat for a while.

Chop the onions and add it to the heated oil. Let it cook until golden brown

When golden brown add tomatoes.Add salt and let it cook for 3 Minutes.

Add a half cup of water into the sufuria to make soup. Let the mixture boil then put in the fish.

Let the fish cook until ready to be eaten. It can be accompanied by sukuma wiki and served with hot ugali.