 
            Nutrient supply
Marine fish typically differ in their spawning patterns from salmonid fish, as they produce multiple batches of eggs. This increased fecundity requires a constant supply of nutrients and a diet able to have an effect in the spawning process within days.
 
             
                 
                 
                 
                 
                 
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                        