''Acanthoplesiops'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

reef A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock out ...

-dwelling

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

es belonging to the family

Plesiopidae The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Perciformes but are now regarded as being ''incertae sedis'' in the subseries Ovalentaria in the clade Percomorpha. They a ...

. All species are very small, with the largest specimen recorded only reaching 27 mm

standard 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 m ...

. They have several features which distinguish them from other plesiopids, the most obvious of which is the presence of one or two spines on the operculum.

Species

There are currently 6 recognized species in this genus: * ''

Acanthoplesiops cappuccino ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them ...

'' A. C. Gill, Bogorodsky & A. O. Mal, 2013 (Red Sea spiny basslet) Gill, A.C., Bogorodsky, S.V. & Mal, A.O. (2013): ''Acanthoplesiops cappuccino'', a new species of acanthoclinine fish from the Red Sea (Teleostei: Plesiopidae). ''Zootaxa, 3750 (3): 216–222.'' * ''

Acanthoplesiops echinatus ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them ...

'' Smith-Vaniz & G. D. Johnson, 1990 (Hiatt's longfin) * ''

Acanthoplesiops hiatti ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them ...

'' L. P. Schultz, 1953 (Hiatt's basslet) * '' Acanthoplesiops indicus'' F. Day, 1888 (Scottie) * ''

Acanthoplesiops jessicae ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them ...

'' G. R. Allen,

Erdmann Erdmann is a first name and surname, and may refer to: Surname *Carl Erdmann (1898—1945), German historian *Eduard Erdmann (1896—1958), Baltic German pianist and composer *Hans Otto Erdmann (1896–1944), member of the German resistance *Hugo E ...

& William M. Brooks, 2020Gerald R. Allen, Mark V. Erdmann and William M. Brooks: Acanthoplesiops jessicae, a new species of spiny basslet (Acanthoclininae: Plesiopidae) from Papua New Guinea, pp 57-65 , https://aqua-aquapress.com/product/aqua-262_acanthoplesiops-jessicae/ * '' Acanthoplesiops naka'' Mooi & A. C. Gill, 2004 (Tongan spiny basslet) * ''

Acanthoplesiops psilogaster ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them ...

Hardy Hardy may refer to: People * Hardy (surname) * Hardy (given name) * Hardy (singer), American singer-songwriter Places Antarctica * Mount Hardy, Enderby Land * Hardy Cove, Greenwich Island * Hardy Rocks, Biscoe Islands Australia * Hardy, Sout ...

, 1985 (Barebelly longfin)

References

Acanthoclininae {{ray-finned fish-stub