how do koi lay eggs
Feed your female koi high amounts of protein before it lays eggs if you are aware of the pregnancy. Protein will assist in moving the process of laying eggs forward. A koi must mate in order to lay its eggs. The eggs will attach to a surface such as the surface floor of a tank or pond. Determine the age of your fish. Koi fish are ready to lay eggs around the age of 3 to 4 years old. An easy way to tell if your koi has reached reproductive age is by measuring its length. If the koi is under 10 inches, it has not fully developed its reproductive organs and, therefore, cannot lay eggs yet.