The most popular aquaculture
species in China are Chinese carp varieties
including black carp, grass carp, silver carp, and bighead
carp. The other freshwater species, such as
salmon and mandarin fish, have also been becoming
major aquaculture species in China. The nutritional
attribute of fish is dependent on the amount of digestible
proteins, lipids, vitamins and mineral contents
(2). Fish meat is also an excellent source of essential
amino acids and polyunsaturated fatty acids (2,
3). Our previous work confirmed that the amounts of
both the essential and flavor-enhancing amino acids in
mandarin fish (Siniperca chuatsi) are much higher than those in silver carp (Hypophthalmichthys molitrix)
(4).