Dianema

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Siluriformes

Familia: Callichthyidae
Genus: Dianema
Species: D. longibarbis – D. urostriatum
Name

Dianema Cope, 1871

First appeared with brief description and no species; species added by Cope 1872:276.

Type species: Dianema longibarbis Cope, 1872. Type by subsequent monotypy.

Gender: neuter
Synonyms

Decapogon Eigenmann & Eigenmann 1888:165

References
Primary references

Cope, E.D. 1871. Some anatomical points of importance in the classification of the siluroids of the Amazon. Proceedings of the Academy of Natural Sciences of Philadelphia 23: 112–113. BHL Reference page.
Cope, E.D. 1872. On the fishes of the Ambyiacu River. Proceedings of the Academy of Natural Sciences of Philadelphia 23: 250–294, Pls. 3–16. BHL Reference page. [see page 276]
Eigenmann, C.H. & Eigenmann, R.S. 1888. Preliminary notes on South American Nematognathi. I. Proceedings of the California Academy of Sciences (Series 2) 1(2): 119–172. BHL Reference page.

Links

Dianema and its species (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2024. Catalog of Fishes electronic version, accessed on October 2, 2018.
Dianema Cope, 1871 – Taxon details on Integrated Taxonomic Information System (ITIS).

Dianema is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. The type species for this genus is Dianema longibarbis. The name is derived from the Greek di, meaning "two", and nema, meaning "filament".[1] The two species of Dianema share approximately the same distribution, and are found in the Amazon River and lower courses of its tributaries.[2] Dianema species have the habit of swimming midwater, as opposed to the bottom as in most callichthyids.[2]
Species

There are currently two described species in this genus:[1]

Dianema longibarbis Cope, 1872 (Porthole catfish)
Dianema urostriatum (A. Miranda-Ribeiro, 1912) (Flagtail catfish)

References

Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Dianema in FishBase. December 2011 version.
Reis, Roberto E. (1996-04-29). "Dianema Cope 1872". Tree of Life Web Project. Retrieved 2007-07-12.