Fish has been recognized as an excellent fertilizer source for centuries. This liquid formula for all stages of organic crop production is made from fresh fish and fish scraps that are carefully processed at low temperatures to maintain the integrity of naturally occurring amino acids, vitamins, hormones and enzymes. This method produces a fish protein hydrolysate ... a compound that breaks down slowly to become available over a longer period of time. (The majority of fish fertilizers on the market are fast-acting emulsions that lose their effectiveness faster.)