Baryancistrus

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: Loricariidae
Subfamilia: Hypostominae
Tribus: Ancistrini
Genus: Baryancistrus
Species: B. beggini – B. demantoides – B. longipinnis – B. niveatus
Name

Baryancistrus Rapp Py-Daniel, 1989
Vernacular names
português: Acari, Cascudo, Bodó

Baryancistrus is a genus of freshwater Loricariid catfish. They inhabit flowing sections of rivers, especially clearwater, in the basins of the Amazon (notably Trombetas, Tapajós, Xingu and Tocantins) and Orinoco (notably Ventuari) in Brazil and Venezuela. The largest species reach up to 34 cm (13 in) in total length.[2]

Most Baryancistrus are differentiated from other related genera by a membrane connecting their dorsal fin and adipose fin, not present in most other genera.[3]

The species of this genus are mainly herbivores and detritivores, but may take other foods in an aquarium setting. Most have probably not been bred in captivity. It is difficult to sex these fish, including adult specimens. These fish are mainly nocturnal, but will also emerge from their hiding places during the day, after some time getting accustomed to the aquarium. Adequate hiding places are recommended for these fish due to their primary nocturnal nature.
Species

There are currently eight recognized species in this genus:[2][4]

Baryancistrus beggini Lujan, Arce H. & Armbruster, 2009 (Blue panaque)
Baryancistrus chrysolomus Rapp Py-Daniel, Zuanon & R. R. de Oliveira, 2011
Baryancistrus demantoides Werneke, Sabaj Pérez, Lujan & Armbruster, 2005
Baryancistrus hadrostomus de Oliveira, Rapp Py-Daniel & Oyakawa, 2019
Baryancistrus longipinnis (Kindle, 1895)
Baryancistrus micropunctatus de Oliveira, Rapp Py-Daniel & Oyakawa, 2019
Baryancistrus niveatus (Castelnau, 1855)
Baryancistrus xanthellus Rapp Py-Daniel, Zuanon & R. R. de Oliveira, 2011 (Golden nugget pleco)

List of Baryancistrus sp. L-numbers

Though there are many types of fish described as Baryancistrus, there are many that yet to be given a true scientific designation, and are only referred to under the L-number system, including the Gold Nuggets. Here is a list of Baryancistrus by L-number designation. The common name and scientific name are included when available, though some of these fish are only commonly referred to by their L-number. For those fish without a scientific name, they are assumed to be Baryancistrus sp.

L-number(s) or LDA	Common name(s)	Scientific name
L003	Kieser pleco
L018, L085	Gold Nugget pleco	Baryancistrus xanthellus
L019
L026		Baryancistrus niveatus
L047	Magnum pleco, Mango pleco	Baryancistrus chrysolomus
L057
L081	Gold Nugget pleco	Baryancistrus xanthellus
L084
L115, L248	Mega snowball pleco
L142, LDA33	Big White Spot pleco
L177	Iriri Gold Nugget pleco	Baryancistrus xanthellus
L200*		Baryancistrus demantoides
L219
L274
L239	Blue Panaque	Baryancistrus beggini
L319
L323
L324
L364
L384
LDA60	gold nugget	Baryancistrus xanthellus

* Note: L200 is also used to refer to Hemiancistrus subviridis, another Loricariid that is very similar in appearance to B. demantoides.
See also

List of freshwater aquarium fish species

References

"Baryancistrus". Integrated Taxonomic Information System. Retrieved May 5, 2007.
Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Baryancistrus in FishBase. October 2017 version.
Werneke, David C.; Sabaj, Mark H.; Lujan, Nathan K.; Armbruster, Jonathan W. (2005). "Baryancistrus demantoides and Hemiancistrus subviridis, two new uniquely colored species of catfishes from Venezuela (Siluriformes: Loricariidae)" (PDF). Neotropical Ichthyology. 3 (4). Sociedade Brasileira de Ictiologia: 533–542. doi:10.1590/S1679-62252005000400011. Archived from the original (PDF) on 2007-06-30.
Oliveira, Renildo Ribeiro de; Py-Daniel, Lúcia Rapp; Oyakawa, Osvaldo Takeshi (2019-09-12). "Two New Species of the Armored Catfish Genus Baryancistrus Rapp Py-Daniel, 1989 (Siluriformes: Loricariidae) from Jari River, Amazon Basin, Brazil". Copeia. 107 (3): 481–492. doi:10.1643/CI-19-201. ISSN 0045-8511.