1. Introduction : pollution and fish health in tropical ecosystems : a brief summary on current challenges and perspectives / Eduardo Alves de Almeida, Aline Cristina Ferreira Rodrigues and Ciro Alberto de Oliveira Ribeiro -- 2. Genes and proteins related with biotransformation in tropical fishes : perspectives in aquatic toxicology / Juliano Zanette -- 3. Nuclear receptors in fish and pollutant interactions / Afonso C.D. Bainy, Jaco J. Mattos and Marilia N. Siebert -- 4. Fish neurotoxic pollutants / Helena Cristina Silva de Assis and Maritana Mela -- 5. Pollutants and oxidative stress / Francisco Filipak Neto -- 6. Genotoxicity and mutagenicity / Marta Margarete Cestari -- 7. The use of fish biomarkers in the evaluation of water pollution / Thiago E.M. Parente and Rachel Ann Hauser-Davis -- 8. Blood parameters of estuarine and marine fish as non-destructive pollution biomarkers / R. Seriani, D.M.S. Abessa, C.D.S. Pereira, A.A. Kirschbaum, L.D. Abujamara, L.M. Buruaem, C. Felix, G.C.R. Turatti, L.R.G.B. Prado, E.C.P.M. Sousa and M.J.T. Ranzani-Paiva -- 9. Histopathological markers in fish health assessment / Ciro Alberto de Oliveira Ribeiro and Marisa Fernandes Narciso -- 10. Emerging contaminants and endocrine system dysfunction / Daniele Dietrich Moura Costa -- 11. Nanoecotoxicology in fish species / Juliane Ventura-Lima, Alessandra Martins da Rocha, Marlize Ferreira-Cravo, Andre Lus da Rosa Seixas, Carmen Luiza de Azevedo Costa, Isabel Soares Chaves, Josencler Luis Ribas Ferreira, Rafaela Elias Letts, Lucas Freitas Cordeiro, Glauce R. Gouveia and Jose Maria Monserrat -- 12. Effect of pollutants on condition index / Larissa Paola Rodrigues Venancio and Claudia Regina Bonini Domingos -- 13. Behavioral biomarkers and pollution risks to fish health and biodiversity / Paulo Sergio Martins de Carvalho.