The ''Asian sheepshead wrasse'' or ''Kobudai'', ''Semicossyphus reticulatus'', is one of the largest species of

wrasse The wrasses are a family, Labridae, of marine fish, many of which are brightly colored. The family is large and diverse, with over 600 species in 81 genera, which are divided into 9 subgroups or tribes. They are typically small, most of them le ...

. Native to the western

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

, it inhabits rocky reef areas around the

Korean Peninsula Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, and the

Ogasawara Islands The Bonin Islands, also known as the , are an archipelago of over 30 subtropical and tropical islands, some directly south of Tokyo, Japan and northwest of Guam. The name "Bonin Islands" comes from the Japanese word ''bunin'' (an archaic readi ...

. It can reach in

total length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish ...

and the greatest weight recorded for this species is . This species is valued for its sweet, shellfish-like taste. Semicossyphus reticulatus Korochan

The Asian sheepshead wrasse, also known as the ''kobudai'' in Japan, is a

hermaphroditic In reproductive biology, a hermaphrodite () is an organism that has both kinds of reproductive organs and can produce both gametes associated with male and female sexes. Many taxonomic groups of animals (mostly invertebrates) do not have separ ...

species, meaning that it has both male and female organs which allows it to change its sex. All Sheepshead are born female and as they grow older, eventually will change sex. The species gained media attention when the transformation was caught on camera by the

BBC Earth BBC Earth is a brand used by BBC Studios since 2009 to market and distribute the BBC's natural history content to countries other than the United Kingdom. BBC Studios is the commercial arm of the public service broadcaster. BBC Earth commercia ...

crew while filming in the waters near

Sado Island is a city located on in Niigata Prefecture, Japan. Since 2004, the city has comprised the entire island, although not all of its total area is urbanized. Sado is the sixth largest island of Japan in area following the four main islands and Ok ...

. In 2017, it was shown on the ''

Blue Planet II ''Blue Planet II'' is a 2017 British nature documentary series on marine life produced by the BBC Natural History Unit. Like its predecessor, ''The Blue Planet'' (2001), it is narrated and presented by naturalist Sir David Attenborough. After ...

'' episode "One Ocean". According to

Great Big Story Great Big Story was a media company producing micro-documentaries based in New York with offices in London. Launched in October 2015 by CNN, the company created 2,600 videos, being published on various websites such as Facebook and YouTube. Vid ...

, Japanese diver Hiroyuki Arakawa has had a 30-year relationship with a sheepshead wrasse in Japan's

Tateyama Tateyama may refer to: People with the surname * Midori Tateyama, Japanese writer * Shohei Tateyama (born 1981), Japanese baseball player * Yoshinori Tateyama (born 1975), Japanese baseball player * Homarefuji Yoshiyuki (born 1985), Japanese su ...

Bay, where he is the caretaker for an underwater

Shinto shrine A is a structure whose main purpose is to house ("enshrine") one or more ''kami'', the deities of the Shinto religion. Overview Structurally, a Shinto shrine typically comprises several buildings. The '' honden''Also called (本殿, meani ...

. He calls the fish, named "Yoriko", by hitting a bell on the underwater shrine.

References

Semicossyphus Fish of Korea Labridae Taxonomy articles created by Polbot Fish described in 1839 {{Labridae-stub