Fish consumption in the Amazon region is one of the world’s largest; however, many species of fish commonly show high parasitism rates in muscles, making them unfit for consumption. In this context, the aim of this study was to evaluate the diversity of the parasitic fauna of 4 different species of fish captured in the northern coast of Amazon/Brazil. During the months from January to December 2009, 60 specimens of each species (Brachyplatystoma rousseauxii, Cynoscion leiarchus, Cichla spp., and Colossoma macropomum) were weighed, measured, and identified according their anatomic traits. They were filleted and with the aid of a candling table, their muscles were evaluated for the presence of parasites. The Trypanorhyncha larvae were released from their blastocysts, placed in Petri dishes containing distilled water for 24 h in the refrigerator. Subsequently, they were fixed in A.F.A. (95 parts of 70% alcohol, 5 parts of formalin, 2 parts of acetic acid) for 24 h. The cestodes identification was based in their morphologic traits. The amount of parasites in each specimen and overall were used to calculate the prevalence (P), infection intensity (I), mean infection intensity (MI) and mean abundance (MA). Of the 60 specimens of B. rousseauxii analyzed, 2 were infested by cetodes parasites, one by Poecilancistrium caryophyllum, P (1.60%), I (1), MI (1.00), MA (0.02) and one by Pterobothrium heteracanthum P (1.60%), I (1), MI (1.00), MA (0.02). Three specimens of Cynoscion leiarchus exhibited multiple parasitism by Anisakis spp. and Poecilancistrium caryophyllum P (7.50%), I (1–2), MI (1.50), MA (0.10). Six specimens of Cichla spp. were infested by Clinostomum complanatum, P (10.00%), I (2–3), MI (2.50), MA (0.92) and 2 are also infested by Contracecum spp. P (17.00%), I (1–3), MI (1.70), MA (0.27). No specimen of Colossoma macropomum was infested by any parasites. Despite they do not have zoonotic potential, the high prevalence of Trypanorhyncha represents a serious risk to human health, through the possibility of causing allergic reactions in humans.