How big is my HUGE Maroon Clownfish?

[Reefn34]

I have had this Maroon for about 4 years and got it from a tank tear down. I am wondering around how old she is? She is about 5 inches in length.

Sorry for the bad picture, but here it is compared to my smaller maroon clownfish that is 2 inches or so.

I know Maroons are usually very aggressive towards any and all other fish, but these two are the nicest clown pairs I’ve ever had.

 

[KrisReef]

How big was the first 5 years ago?

Fish keep growing for their entire lives and yours might be 10 or 20 years old or more?

 

[Tamberav]

I don't think this question can be accurately answered just based on size. Many factors effect growth rate, especially food quality but tank size and just genetics.