''Iso'' is an

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 ...

genus of

silverside Silverside may refer to: * Silverside (beef), a cut of beef * Silverside (fish), the Atheriniformes, an order of fish * Agnes Silverside (died 1557), one of the Colchester Martyrs * USS ''Silversides'', the name of 2 U.S. Navy submarines * Silver ...

s, commonly called surf sardines, the only genus in the

monogeneric In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

family Isonidae, they were formerly classified in the family

Notocheiridae The surf silverside (''Notocheirus hubbsi'') is a species of Silverside (fish), silverside from the Order (biology), order Atheriniformes found along the Pacific Ocean, Pacific coast of Argentina and Chile. It is the only known member of its Fam ...

alongside the surf silverside but they are now thought to be within the

suborder Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...

Atherinoidei while the surf silverside is classified in the suborder

Atherinopsoidei Atherinopsoidei is a suborder of the order Atheriniformes comprising two families, both of which are restricted to the Americas. Families The suborder contains the following families: * Family Atherinopsidae Fitzinger, 1873 (New World silver ...

, along with the

Neotropical silversides The Neotropical silversides are a family, Atherinopsidae, of fishes in the order Atheriniformes. About 112 species in 13 genera are distributed throughout the tropical and temperate waters of the New World, including both marine and freshwater ha ...

. It contains five species to date, the first of which was described in 1895.

Species

The currently recognized species in this genus are: * '' Iso flosmaris'' D. S. Jordan & Starks, 1901 * ''

Iso hawaiiensis ISO is the most common abbreviation for the International Organization for Standardization. ISO or Iso may also refer to: Business and finance * Iso (supermarket), a chain of Danish supermarkets incorporated into the SuperBest chain in 2007 * Iso ...

'' Gosline, 1952 (Hawaiian surf sardine) * '' Iso natalensis''

Regan The family name Regan, along with its cognates O'Regan, O Regan, Reagan, and O'Reagan, is an Anglicized form of the Irish surname Ó Riagáin or Ó Ríogáin, from Ua Riagáin. The meaning is likely to have originated in ancient Gaelic ''ri'' ...

, 1919 (surf sprite) * '' Iso nesiotes'' Saeed, Ivantsoff & Crowley, 1993 (Samoan surf sardine) * '' Iso rhothophilus'' ( J. D. Ogilby, 1895) (flower of the wave)

References

Atheriniformes {{Atheriniformes-stub