Pterygoplichthys multiradiatus

Pterygoplichthys multiradiatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Family:	Loricariidae
Subfamily:	Hypostominae
Tribe:	Pterygoplichthyini
Genus:	Pterygoplichthys
Species:	P. multiradiatus
Binomial name
Pterygoplichthys multiradiatus (J. Hancock, 1828)
Synonyms
Hypostomus multiradiatus Hancock, 1828 Ancistrus multiradiatus (Hancock, 1828) Liposarcus multiradiatus (Hancock, 1828)

Pterygoplichthys multiradiatus is one of several tropical fish commonly known as Orinoco sailfin catfish, plecostomus (or plecos). It belongs to the armored catfish family (Loricariidae). Named for its sail-like dorsal fin, the part of its scientific name multiradiatus means "many-rayed" and refers to the rays of the dorsal fin. P. multiradiatus is one of a number of species commonly referred to as the common pleco by aquarists.^[1]

Other scientific names that were used (as synonyms) for P. multiradiatus include Hypostomus multiradiatus, Ancistrus multiradiatus, and Liposarcus multiradiatus. P. multiradiatus is sometimes confused with Pterygoplichthys pardalis, which is a different species of pleco. P. multiradiatus goes by a number of common names. It can be called the "long-fin armored catfish" in Hawaii, "sailfin catfish", "sailfish catfish", "many-rayed (multiradiatus) pleco" or "radiated ptero" in the United States, 多輻翼甲鯰 in Mandarin Chinese. P. multiradiatus is mottled brown/black and inhabits freshwater streams and lakes and in weedy, mud-bottomed canals in its native habitat: the Orinoco River basin in Venezuela. Its geographic distribution is 10°N - 1°N, 68°W - 61°W. This tropical, nocturnal bottom-dweller likes warm water at the temperature range of 23–27 °C, pH range: 6.5–7.8, and dH range: 4–20.

P. multiradiatus browses on substrate, mainly feeding on benthic algae and aquatic weeds, but will also take worms, insect larvae and other bottom-dwelling invertebrates as food.

One of the large plecos (growing to a maximum of 50.0 centimetres (19.7 in) TL), this species likes solitude, is relatively peaceful as an aquarium fish and does well with cichlids and other big fish, and should be kept in large tanks only and with plenty of rocks and driftwood in which to hide. Like many other plecos, it is very important in the aquarium trade.