i really think it will be there in one years time.. maybe sooner or maybe a little later.. other factors come into play.. how much you feed and how big the tank is for him/her to stay healthy and have the best growth rate.. but all in all it won't take long.. feeding the pacu a healthy diet consists of veggie diet with little protein too.. i love pacus.. my favorite fish.. they are playful and entertaining.. get into mischief if they are hungary.. like eat or chew on the tubes in the tank..etc.. they have an enormous appetite to go along with their growth rate.. mine would eat sliced up carrots and peas and nuts and zucchini .. you can hear them chew the crunchy veggies.. very cute..