A NEW STANDARD FORMULA FOR SEASONAL GROWTH OF FISH IN POPULATION-DYNAMICS

This formula is based on the Richards formula, which includes well-kno wn growth formulae, and is invariant for allometry. It is expanded by exchanging the independent variable from time to its function, in othe r words the cumulative water temperature. This standard formula includ es the method of substituting values for the cumulative water temperat ure into the time term, the mathematical model of adding sine function s to the time term, and switched growth rate models. This standard mod el is given by general theory, which makes the character of parameters clear and helps to analyze the growth formula statistically.