Interesting question. Actually, both are right, and both are wrong. Fish growth (somatic growth) is not about age. It is about the abundance of food in the water. In addition, environmental and genetic factors have an effect. For this reason, the growth as it about aging, or aging as it about grows, the more you will not be able to say. However, if it is evaluated over the biochemical activities of the cell, then it would be more accurate to say that it is aging as it grows.

but in the literature we know that growth is a function of age. In fact, it is necessary for me to give up generalizations. Because both ideas are true according to many species.