What Kind of Koi Variety Is Utsuri? Characteristics and Care Guide for Utsuri Koi

Utsuri is one of the main varieties of koi and belongs to the Utsuri group. The fish has a black base color, with large patches of white, red or yellow markings distributed over the body. Its sumi (black) markings look like brushstrokes in an ink-wash painting, giving it an overall calm and imposing appearance that is very popular among ornamental fish enthusiasts.

According to the color of the markings, Utsuri can be divided into three types: Shiro Utsuri, Hi Utsuri and Ki Utsuri. Shiro Utsuri has a black base covered with large white patches, with black and white clearly defined, and is the most common type of Utsuri; Hi Utsuri has a black base with orange-red markings; Ki Utsuri has a black base with yellow markings. Utsuri is fairly closely related to Showa Sanshoku, but Showa Sanshoku combines red, white and black, while Shiro Utsuri has only black and white, so the difference is quite obvious.

When judging Utsuri, the main things to look at are whether the sumi is deep, black and strong, and whether the markings are evenly distributed. Individuals with sumi on the head and naturally extending sumi markings often have greater ornamental value. A good Utsuri has strong black-and-white or black-and-red contrast and clear outlines, swimming like a moving ink-wash painting.

Utsuri is kept in much the same way as ordinary koi and is suitable for ponds or aquariums with ample water volume and a well-developed filtration system. In daily care, keep the water clean, change the water regularly and ensure sufficient dissolved oxygen, and avoid sudden, drastic changes in water temperature over a short period. Feed mainly specially formulated compound feed, in small amounts and more frequently, and remove leftover bait promptly to prevent water quality from deteriorating.

Utsuri is relatively robust, but when water quality is poor or the seasons change, it may still be infected by common diseases such as white spot disease, Chilodonella and Lernaea. Usually pay attention to the fish's body surface, swimming posture and feeding state, and if you notice rubbing against the tank, a white film on the body surface or attached foreign matter, isolate and treat it promptly. Good water quality management and daily observation are the keys to keeping Utsuri well.