Eugenol as an efficient anesthetic for neotropical fish Prochilodus nigricans (Teleostei, Prochilodontidae) oleh R.M. Viegas, C.L. França, J.S. Castro, J.J.P. Castro, T.C. Santana, M.P.G. Costa-Lima, R.N.F. Carvalho Neta, C.R.P. Carreiro, E.G. Teixeira