Breeding Material for Koi Fry Care
Having the proper materials for Koi care breeding is very important. Avoiding dangerous toxic materials should be one of the first considerations. This article lays out the do’s and don’ts of choosing the proper materials for breeding Koi fry.
If you plan on having a dedicated spawning tank you will most certainly want breeding material. This is simply material that offers surface area for the eggs to stick to. This could take the shape of aquatic plants, ropes, a “spawning brush” or a “spawning mop”. Most importantly it needs to be something that won’t be toxic in any way and has lots of surface area for eggs to attach. You will want to have plenty of breeding material for the eggs to attach to-maybe around 50 to 60 percent of the bottom of the spawning tank should be covered. The size of your spawning tank will depend on how many fish you plan on trying to get to reproduce. It should be something on the order of 1 to 2 feet deep and maybe 6 feet by 6 feet –some hobbyists have used inflatable kiddie pools with success. After eggs have been laid and adults removed from spawning tank you should see hatching around 4 days later. When you are satisfied with the density of hatched fish you can remove the breeding material.
— Koi Care Breeding Materials