Soragoi are solid colored grey or silver koi.
Just like Chagoi, Soragoi are closely related to their wild carp ancestors, and can grow to be very large in size. Full-grown Soragoi commonly reach over 30 inches in length. Additionally, their close relation to wild carp means they are very calm and docile as they grow older. If you attempt to teach your koi to hand feed, a mature Soragoi will almost certainly be one of the first koi to come up and take the food right out of your hand. However, remember that it takes time and patience to teach any koi to hand feed, no matter the variety.
Although Soragoi are nowhere near as colorful and flashy as most other koi varieties, their simple appearance, coupled with their docile nature, can provide a wonderful balance to the other koi in your pond.
What To Look For
It is a common misconception that since Soragoi are a single color with no pattern, it must be very easy to find a truly high quality specimen. This is not the case at all. In fact, it can be very difficult to find a truly top-notch Soragoi.
Body conformation is of the utmost importance. The head must be symmetrical and of a correct size in proportion to the rest of the body. The nose must be correctly shaped, meaning that it should not be too short and rounded off, or too long and pointy, like the beak of a parrot. Additionally, the body should be symmetrical and “torpedo-shaped”, meaning thick around the pectoral fins and tapering down evenly back toward the tail fin. The fins themselves should also be symmetrical and flawless, with no deformities.
Since there is no pattern, extra attention should be paid to the arrangement of the scales. Do they combine to display a uniform reticulated pattern? Missing or out of place scales will be readily apparent due to the lack of pattern. Additionally, beware of any blemishes or scales of a different color than the rest. These will ruin the overall uniform look of a Soragoi, and will only become more apparent as the koi ages.
Last, pay attention to the color of the head. A truly high quality specimen will have a smooth and flawless head, with no blemishes to speak of.