Gonna depend on what you call fully grown!
The fully grown size of anything is the average size of a sample batch over time. From this you will always get abnormalities, the outliers. Take humans, what is the fully grown size of a person? 5ft, 6ft or 8ft ?
The fully grown size of two fish crossed together is not the size of either parent. It’s the size of the offspring. So taking a tsn/rtc
If due to the crossing and genetics they all die when they get to 2ft , even though the true fish get over 4 ft, then the fully grown size of the cross is 2ft!
What you are actually wanting is pictures of the crosses throughout their life up to their death to determine, since no one actually knows it, what their fully grown size is!
Not their potential fully grown size, because that’s a pure guess.
I have a 28” marble achara and an 18” spotted tsn/marble achara and I would suggest neither are fully grown but the achara is 5 year old and has stopped growing and the tsn/achara is only less than 2 year old but still growing.
The fully grown size of anything is the average size of a sample batch over time. From this you will always get abnormalities, the outliers. Take humans, what is the fully grown size of a person? 5ft, 6ft or 8ft ?
The fully grown size of two fish crossed together is not the size of either parent. It’s the size of the offspring. So taking a tsn/rtc
If due to the crossing and genetics they all die when they get to 2ft , even though the true fish get over 4 ft, then the fully grown size of the cross is 2ft!
What you are actually wanting is pictures of the crosses throughout their life up to their death to determine, since no one actually knows it, what their fully grown size is!
Not their potential fully grown size, because that’s a pure guess.
I have a 28” marble achara and an 18” spotted tsn/marble achara and I would suggest neither are fully grown but the achara is 5 year old and has stopped growing and the tsn/achara is only less than 2 year old but still growing.
