Metallic Taisho Sanshoku (Sanke). Yamato Nishiki are the metallic version of the Sanke. Their patterns are judged the same way that the regular Sanke are. Yamato Nishiki are created by breeding regular Sanke with Platinum Ogon.
For many of us, our ponds are beginning to warm (or will soon be). Water temperature, not the ambient air temperature, is the gauge for what to do and when to do it in regards to your pond. Water temperature should be checked at approximately 1 foot of depth. Avoid feeding your fish until the water temperature is consistently above 50 degrees Fahrenheit. This will also be the time to start adding spring maintenance bacteria and enzyme treatments.