The production of tambaqui Colossoma macropomum has reached a milestone in South American aquaculture, being the most farmed native fish in the continent (IBGE, 2018; Valladão, Gallani, & Pilarski, 2018). The farming of tambaqui is encouraged in several tropical countries because the species presents many advantages amenable to intensive farming (e.g. domesticable, omnivorous and easily reproduced). However, parasitism caused by acanthocephalan Neoechinorhynchus buttnerae is a serious problem for tambaqui