The best way to reduce the importation of fish – and most other things – is to float the naira.

In the present circumstances the naira will most likely lose value if it’s floated. Imported fish and toothpicks and cars will become very expensive and the populace will respond by buying less AND seeking local alternatives. Nigerian farmers will likely respond by producing more fish….and other businesses will produce more toothpicks and cars.

All the other measures – especially government intervention in the market – will not accomplish much. Nigerians have a human right to buy whatever they want as long as they can afford it.