Growth ring interpretation shows that they can live about 10 to 15 years , but a study showed that the known maximum age of blue cod is 23 years old .
P. colias have the potential to grow up to 50 cm in length and weight 4 kg .
Growth ring interpretation shows that P. colias can live about 10 to 15 years , but a study showed that the known maximum age of blue cod is 23 years old .
P. colias have the potential to grow up to 50 cm in length and weight 4 kg .