In the Peruvian Amazon, species of the Cichlidae constitute a valuable resource for fisheries and aquaculture activities. Due to the importance of cichlids in this region and the constant interest in conduct studies focused on the biodiversity of monogenoids, the present study aimed to present a checklist of monogenoids from the gills of cichlids with importance in aquaculture in the Peruvian Amazon. Thirteen species of cichlids were analyzed from November 2020 to May 2023 from different water bodies in the Peruvian Amazon. There were identified five species of Gussevia Kohn & Paperna, 1964; eight morphospecies of Gussevia (Gussevia sp. 1 to sp. 8); four species of Sciadicleithrum Kritsky, Thatcher & Boeger, 1989; eight morphospecies of Sciadicleithrum; one species of Biotodomella Morey, Arimuya & Boeger, 2019 and one species of Trinidactylus Hanek, Molnár & Fernando, 19...