hi, just joined your forum and looking for some advice , i brought my 2 butterfly koi indoors during the winter and yesterday i put them back into the pond, although these are the 2 biggest fish {the others are 1 Shubunkin and 2 comets} all hell has broke loose in the pond with consent chasing of the 2 koi, all where happy together last year { there had been 2 shubunkin but i have lost 1 } i am assuming that perhaps the koi to be female, i dont want to add more fish to the pond, should i take the koi back out or is there a way i could split pond