how long koi can lay eggs
The day before the Koi hatches the eyes in the egg will have a shine to them. Soon afterwards, the young Koi will begin to wriggle then, gradually, over the next few hours, it will break out of its 'shell'. It will take three to four days for the Koi eggs to develop and the fry to hatch at temperatures of 68 -7l.Koi fry can develop at temperatures as low as 63, in which case their incubation will take five or six days, or as high as 77, which will decrease their hatching time.he day before the Koi hatches the eyes in the egg will have a shine to them. Soon afterwards, the young Koi will begin to wriggle then, gradually, over the next few hours, it will break out of its 'shell'. It will take three to four days for the Koi eggs to develop and the fry to hatch at temperatures of 68 -7l.