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Fishery Resource is Aquatic Animals and Plants which is good for fishery
Fishery resource is a renewable resource.
Stock is an unit of fishery management.
Various method of stock identification
A stock has its sex, length and age composition.
Chi-square test is used for test the difference of sex ratio.
Age determination is conducted from various age character (scale, otolith, shell etc)
Length composition will be converted to age composition by using ALK