Parasitic metazoans were determined in Triportheus angulatus (Spix & Agassiz, 1829) acquired from the "Belén" market in Iquitos, Peru. Thirty individuals of T. angulatus were collected, of which the gills, muscles and digestive tract were analyzed to find parasitic metazoans. The groups of identified parasites were Monogenoidea and Nematoda. Permanent slides cleared in Hoyer's medium were prepared for monogenoids for their identification. In nematodes, semi-permanent slides cleared with lactic acid were prepared. Parasitological indices were calculated for prevalence, intensity, mean intensity and mean abundance. One hundred fifty-one metazoan parasites were collected from T. angulatus acquired from the “Belén” market in Iquitos, Peru. The following monogenoids were identified: Anacanthorus acuminatus Kritsky, Boeger & Van Every, 1992; Anacanthorus chaunophallus Kritsky, Bo...

In 2019, an investigation was carried out with the objective of determining the parasitic metazoans in Triportheus angulatus acquired from the "Belén" Iquitos market. Thirty individuals of T. angulatus were collected, of which the gills and the digestive tract were analyzed in order to find metazoans. The groups of identified parasites were Monogenoidea and Nematoda. Permanent slides clarified with HOYER medium were prepared from the collected monogenoids for their identification. In the case of nematodes, semi-permanent sheets clarified with lactic acid were prepared. Parasite indices and Margalef richness and Shannon diversity indices are calculated. 151 parasitic metazoan individuals were collected in Triportheus angulatus acquired from the "Belén" Iquitos market, of which 08 monogenoid species were identified; Anacanthorus acuminatus, A. chaunophallus, A. chelophorus, A. euryphallu...