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PPP, hold onto that guarantee. The beni development and the harder white skin look male. But if it is female then she would naturally have a better shelf life and more future than a male.
Yes, the fish I posted is two years old and only 62 cm ( and she is a $10,000 fish). But she still have very young beni and lots of developing in that area yet to come. It is a three or four coat type beni development. And this fish is not half way thru yet. You want a fish to finish its beni and shiro development at an older age, ideally. In a sense, a super tategoi is one that 'suffers' from a kind of arrested development in skin maturity.
I assume you realize that big babies doesn't necessarily translate to big adults? You can manipulate fry growth with indoor heat and high feeding so that you get extra size in one and two year olds. But the fish will still only grow to be it's natural size at adulthood. The hint of this technique , by the way, is always in the beni development because with high heat and excess protein comes maturing beni. Very thick, bright beni can be a sign of certain lineage but just as often is a sign of finishing beni. I'm think'n, if female, yours gets to 70- 74 cm? As a good representation of modern koi with modern genetics.
Great difficulty in getting any koi past the 78-80 cm mark. 32 inches is a HUGE fish and really pretty rare. Whereas 74 cm ( 29 plus inches) is getting fairly common. That last 3 or 4 inches is a bear!! And honestly 90 cm ( 36 inches) is very very unlikely.
In the end, you need that large mouth, wide and broad head, broad tail tube and wide back bone. Not always of course, but 99% of the time, you can bet on a fish with large bone structure. - JR
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