To buy Big koi or Small koi?
I often heard people saying that buying small koi of 10 to 15cm is not wise, because the pattern and colour of koi at this size can change easily as they grow. And they say you can’t tell much detail on a small koi.
Therefore, most hobbyists will pay few thousand rand to buy a bigger koi (20 to 40cm) which you can tell more detail of the koi.
But, one koi breeder in Japan told me that: “If you want to learn and become an expert on koi, raising small koi is the best way to achieve it.”
Think about this, what he said is very true. Because the fastest way to learn is to raise lots of small koi and learn how they change.
But at the end of the day, to keep big or small koi is a personal choice.
NB! The above is just, my personal comments. If I said anything you dislike, please forgive me.