In the present study it is presented a list of species of Monogenoidea with their fish-hosts used in aquaculture in the Peruvian Amazonia. Fish species were obtained from April 2018 to April 2022 from different artificial fish ponds located in Centro de Investigaciones Fernando Alc ' antara Bocanegra (CIFAB) of the Instituto de Investigaciones de la Amazonia Peruana (IIAP) in Loreto-Peru and from fish ponds of the Centro de Inves-tigaci ' on Carlos Miguel Castan similar to eda Ruiz from IIAP, San Martin-Peru. A total list of fourty-eight species is pre-senting in the present study: one species from Arapaima gigas (Schinz); four species from Colossoma macropomum (Cuvier); five species from Myloplus schomburgkii (Jardine); two species from Piaractus brachypomus (Cuvier); 19 species from Pygocentrus natterei (Kner); one species from Prochilodus nigricans (Spix & Agassiz); five species from Brycon amazonicus (Spix & Agassiz); one species from Chaetobranchus flavescens; three species from Astronotus ocellatus (Agassiz); two species from Cichla monoculus (Agassiz); four species from Pterigoplichthys pardalis (Castelnau); three species from Calophysus macropterus (Lichtenstein); and three species from Pseudoplatystoma punctifer (Castelnau).