The Pseudancistrus yekuana lives in the demersal, freshwater environment.
The second species, Pseudancistrus yekuana, is named after the Ye-kuana, the indiginous peoples inhabiting the upper Río Ventuari, where the fish is found. More
Pseudancistrus yekuana appears to be a species that matures at a small size, with the largest specimen collected at only 43 mm SL. There are 12 other valid species of Pseudancistrus recognised, of which only two (P. coquenani and P. More
Pseudancistrus yekuana is known only from the type locality, immediately upstream of Salto Tencua in the upper R More