Holocentrinae is a

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

of Holocentridae containing 40 recognized species and one proposed species. Its members are typically known as squirrelfish and all are

nocturnal Nocturnality is a ethology, behavior in some non-human animals characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite. Nocturnal creatur ...

. All three

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

in the subfamily are found in the Atlantic and ''

Holocentrus ''Holocentrus'' is a genus of squirrelfishes found in the Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth# ...

'' is restricted to this ocean. Most species in genera '' Neoniphon'' and '' Sargocentron'' are from the

Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

region and several of these occur in the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), ...

west of the southern tip of

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

. A fossil genus of the subfamily is '' Eoholocentrum'' from the

Early Eocene In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by th ...

of Italy. A rare example of the fish is featured in

Ian Fleming Ian Lancaster Fleming (28 May 1908 – 12 August 1964) was a British writer, best known for his postwar ''James Bond'' series of spy novels. Fleming came from a wealthy family connected to the merchant bank Robert Fleming & Co., and his ...

's 1960

James Bond The ''James Bond'' franchise focuses on James Bond (literary character), the titular character, a fictional Secret Intelligence Service, British Secret Service agent created in 1953 by writer Ian Fleming, who featured him in twelve novels ...

short story " The Hildebrand Rarity".

References

External links

* * * Holocentridae Fish subfamilies Taxa named by John Richardson (naturalist) {{Beryciformes-stub Extant Ypresian first appearances