“…The anesthetic efficacy of eugenol was showed for several Neotropical species as Piaractus mesopotamicus (Holmberg, 1887) (GONÇALVES et al, 2008), Astyanax bimaculatus (Linnaeus, 1758) (SILVA et al, 2009), Brycon amazonicus (Spix & Agassiz, 1829) (VIDAL et al, 2007), Rhamdia quelen (Quoy & Gaimard, 1824) (CUNHA et al, 2010a), Carassius auratus (Linnaeus, 1758) (BITTENCOURT et al, 2012), Centropomus parallelus Poey, 1860(SOUZA et al, 2012 and Brycon hilarii (Valenciennes, 1850) (FABIANI et al, 2013). The efficacy of the essential oil (EO) of Lippia alba was also demonstrated for Rhamdia quelen (CUNHA et al, 2010b;HELDWEIN et al, 2012HELDWEIN et al, , 2014TONI et al, 2014), Hippocampus reidi (Ginsburg, 1933) (CUNHA et al, 2011) and Sparus aurata (Linnaeus, 1758) (TONI et al, 2015), but the EO of Aloysia triphylla was studied only in R. quelen (PARODI et al, 2014) and C. parallelus (PARODI et al, 2016).…”