Hypostomus nematopterus
Hypostomus nematopterus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Oyapock basin in French Guiana. The species reaches  in standard length and is believed to be a facultative air-breather. Hypostomus nematopterus appears in the aquarium trade, where it is typically referred to either as the thread-finned pleco or by its associated L-number, which is L-060. References 

nematophorus
Fish described in 1984