“…In freshwater fishes from Brazil, Hysterothylacium sp. larvae have been reported in Rhaphiodon vulpinus Agassiz, 1829, Salminus maxillosus Valenciennes, 1850, Galeocharax knerii (Steindachner, 1879), Hypophthalmus edentatus Spix & Agassiz, 1829, Loricariichthys sp., Plagioscion squamosissimus (Heckel, 1840), and Crenicichla lepidota Heckel, 1840 from the Paraná River, State of Paraná (Moravec, Kohn, & Fernandes, 1993), in Gymnotus carapo Linnaeus, 1758 and Leporinus friderici (Bloch, 1794) from the upper Paraná River floodplain (Takemoto et al, 2009), in Brachyplatystoma filamentosum (Castelnau, 1855), Brachyplatystoma rousseauxii (Castelnau, 1855), and Oxydoras niger (Valenciennes, 1821) from Colares and Vigia Island, State of Pará (Rodrigues et al, 2015), in Arapaima gigas (Schinz, 1822) from fish farms from the State of Amazon (Andrade-Porto et al, 2015;Azevedo, Morey, & Malta, 2017), in Hyphessobrycon eques (Steindachner, 1882) from the Paranapanema River, State of São Paulo (Acosta & Silva, 2015), and in Hoplias malabaricus (Bloch, 1794) from the Jacaré-Pepira River and Jacaré-Guaçú River, State of São Paulo (Leite, Pedreira-Filho, Azevedo, & Abdallah, 2020). According to Moravec et al (1993) these genera might be carried from marine to freshwater environments by some migratory fishes.…”