Nematodes and acanthocephalans of hygienic-sanitary importance parasitizing Hyporthodus niveatus (Valenciennes, 1828) (Actinopterygii) collected from fish markets of the municipality of Niterói, RJ, Brazil

Hyporthodus niveatus is an appreciated and valuable commercial fish species in the municipality of Niterói, state Rio de Janeiro, Brazil, due its excellent quality flesh. The constant presence helminths abdominal musculature, viscera serosa individuals has been subject complaints among local traders because economic losses to their repugnant aspect. Considering hygienic-sanitary importance significance for collective health, was investigated 20 individual H. purchased from markets Niterói 2021-2022. Nematodes, identified as third-instar larvae Contracaecum sp., Terranova Hysterothylacium deardorffoverstreetorum Raphidascaris were found parasitizing intestine cavity. Acanthocephalans, juveniles Corynosoma australe, intestine. highest parasitic indices deardorffoverstreetorum, with prevalence 30%, mean intensity 1.5, abundance 0.45 infection ranges 1-2. Considerations about zoonotic potential these parasites are presented order increase food safety consumers.