Karasugoi are Koi that are solid black. When buying a Karasugoi, look for one with
deep color. Check the fish over for any old scars or bad scales, for
these will take away from the look of the Koi.
Karasu
or Karasugoi (kah' rah sue or kah' rah sue goy) Means "The crow" or black Nishikigoi with no white.