The fish has a energibudget.
Absorbd energi is split beetwene, metabolisme,somatic growth, and reproductione.
The growth rate is then deteremined/efectet by:
1. themperature C/F and acses to Nutrientes.SEASON in NATURE
2. life sycleus (age)SEASON in LIFE

By nature this are given factors, each spicies has an ideal, and a upper/lower toleranse in habitat demands, furthermore a maximum lifespan.
Within these boundries we/you/me/? can manipulate.
The formula is a mix of 1. and 2. you prolong the optimal natural cross seasons, for gowth, with in the cost$/time limit you have.

PAUL


PAUL