Motoguro: The Distinctive Black Pattern that beautifies high quality Showa and Utsuri Koi

Motoguro, or sometimes called motogoro, is a Japanese term that refers to the black pattern, spots, or markings that appear at the base of the pectoral fins of a koi fish. Motoguro is very important, especially in judging the quality of koi, especially the Showa Sanshoku variety. Not all koi have motoguro on their fins, but this marking is characteristic of the Showa Sanshoku and Utsuri varieties.

Showa without motoguro does not mean it is not Showa. In some cases, young Showa may not show motoguro yet because their patterns and colors are still developing. As they age, motoguro may appear or become more pronounced after a few years.

Motoguro on Showa and Utsuri can vary in shape and color intensity. In young koi (under one year old), often the motoguro are not visible or the fins are completely black. As the koi grows, the motoguro can develop to become more symmetrical and sharp.

Good traits in Showa and Utsuri:

• Showa Sanshoku: Balanced motoguro at both fin bases.
• Shiro Utsuri: Has clear motoguro on both fins, adding to the beauty of the koi.

Motoguro plays an important role in assessing the quality of certain koi varieties, especially Showa Sanshoku and Utsuri. In addition to beautifying the appearance of the koi, motoguro gives the impression of proportion and harmony. In the koi world, this aesthetic is known as one of the criteria that indicates the class and potential of the koi, especially in contests.

Unique Elements in Motoguro

• Symmetry: The presence of motoguro on both fins must be balanced and symmetrical to be considered ideal. Imbalance can reduce the aesthetic value of the koi. – Motoguro Shape: The ideal shape usually resembles a neat triangle or semicircle. Motoguro shaped like a “pen” or small scribbles are considered undesirable in high-quality koi.
• Color and Sharpness: The best motoguro have a solid black color with no gradations or white spots. The sharpness of this color indicates superior genetics.

Motoguro and Its Development

• Motoguro is Not Permanent: In young koi, motoguro is often not yet present or is very faint. This pattern develops over time, and some koi do not show perfect motoguro until several years later.
• Genetic Influence: Motoguro is influenced by the genetics and quality of the parent koi. In breeding, a pair of parents with a balanced motoguro pattern often produces offspring with good motoguro quality.
• Environmental Factors: Water conditions, nutrition, and stress also affect the development of motoguro. Clean water and high-quality food can help to clarify this pattern.

Types of Motoguro Based on Varieties

1. Showa Sanshoku (Showa): Ideally has neat and balanced motoguro on both fins. Motoguro should contrast with the white and red colors on the koi’s body.

2. Shiro Utsuri: Has dense motoguro on both fins, combined with black and white patterns on the body. This pattern gives a strong impression of elegance.

Motoguro is a small but important element that shows the quality and aesthetics of koi, especially Showa and Utsuri varieties. Understanding the characteristics and development of motoguro not only helps koi enthusiasts better appreciate the beauty of koi, but also provides insight into the art and uniqueness of the koi world.