The important factor which determines the
value of a fish product is its biological composition.
The desirable changes produced by the action of
microbes enhance the flavour improve the nutritional
value and extend the shelf life . On the other hand, the deterioration
caused by microorganisms, proteolytic, enzymes,
oxidative particularly lipid and various non enzymatic
reactions can be controlled. Examination of fermented
fish may therefore provide clues as to how its
production and preservation can be expanded and
thereby contributed to improve nutrition in future.