A helminthological analysis was performed on 91 specimens of the porkfish, Anisotremus virginicus (Linnaeus) (Haemulidae), captured in coral reef habitats of the Parque Nacional Sistema Arrecifal Veracruzano (PNSAV) (Veracruz Reef System National Park), in Veracruz, Mexico. A total of 22 helminth taxa were recorded: 9 digeneans, 6 monogeneans, 1 cestode, 4 nematodes, and 2 acanthocephalans. From the 22 taxa, 11 are new host records and 7 are new geographic records. The highest prevalence was found for Monorchis latus Manter, 1942 (69%), and Mexicana anisotremumCezar, Paschoal and Luque, 2012 (68%), and the highest mean intensity was found for M. anisotremum (19.6), M. latus (18.9), and Dollfusentis chandleri Golvan, 1969 (10.8). Other important values were the component community richness (S = 22), diversity (Shannon index H′ = 1.6), and infracommunity level (S = 3.1 ± 1.4; Brillouin index, H = 0.52 ± 0.3), which were similar to those found in other marine fish at the same study site. Our result represents a significant range extension for several helminth taxa. The parasite communities of A. virginicus rank among the richer parasite communities of neotropical marine fishes. In addition, the results reveal the PNSAV is a diverse area for the parasite assemblage of neotropical reef marine fishes, particularly of haemulids but also for other fish families.

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