What is the difference between Japanese koi Carp and non-Japanese koi Carp?
Biologically there is no difference, they are all the same species and require the same conditions to live. The Japanese breeders, however, have more experience in selecting which koi to keep to grow up and also have better quality parent fish. So you should get better patterned and better coloured koi from Japanese stock, but be prepared to pay more. Is it ok to keep Goldfish in Koi ponds? Yes, other cold-water fish such as Goldfish and Shubunkins will live happily in Koi ponds. However you should be aware that certain types of fish such as Rudd and Orfe are more sensitive to some medications. Make sure that you check any treatments before use in your pond. Do Koi ponds need a bottom drain? While not absolutely necessary, a bottom drain fitted to your pond will make maintenance a lot easier. Most people take the feed from a bottom drain straight into the settlement chamber of their pond filter rather than to the drainage system. The constant draw of water from the pond bottom into the
