[quote=tewa;79142]hey koiman
sadly in australia we struggle to get them past 65cm, most of the GCs are males at around 60 to 62cm in the koi shows..... sigh
females seem to roe up too much on one side and lost the symmetry of the body..... i wonder if its genetic or the fact most aussies dont have amudpond to put their fish in
Size is mostly determined by genetics so large parents produce large offspring . As to body shape a mud pond helps greatly but a major factor are seasons . I think that control of feeding is more difficult if you do not have seasons . You really need to have seperate ponds for young fish growing and males and females that way you have some control of feeding .
Regards
Eugene