Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae) by Wolmar B. Wosiacki, Mário de Pinna

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Hemigrammus arua, a new species of characid (Characiformes: Characidae) from the lower Amazon, Brazil by Flávio C. T. Lima, Wolmar B. Wosiacki, Cristiane S. Ramos

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Description of a new species of Ituglanis (Siluriformes: Trichomycteridae) from Serra dos Carajás, rio Tocantins basin by Wolmar B. Wosiacki, Guilherme M. Dutra, Marina B Mendonça

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The untold story of the caudal skeleton in the electric eel (ostariophysi: gymnotiformes: electrophorus). by Carlos David de Santana, Richard P Vari, Wolmar B Wosiacki

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Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae) by José L. O. Birindelli, Danielle F. Fayal, Wolmar B. Wosiacki

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Trichomycterus anhanga, a new species of miniature catfish related to T. hasemani and T. johnsoni (Siluriformes: Trichomycteridae) from the Amazon basin, Brazil by Guilherme M. Dutra, Wolmar B. Wosiacki, Mario C. C. de Pinna

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Karyotypic and morphological divergence between two cryptic species of Eigenmannia in the Amazon basin with a new occurrence of XX/XY sex chromosomes (Gymnotiformes: Sternopygidae) by Danillo S. Silva, Luiz A. W. Peixoto, Julio C. Pieczarka, Wolmar B. Wosiacki, Jonathan S. Ready, Cleusa Y. Nagamachi

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Rapid assessment of the ichthyofauna of the southern Guiana Shield tributaries of the Amazonas River in Pará, Brazil by Guilherme M. DUTRA, Tiago M. S. FREITAS, Bruno S. PRUDENTE, Gilberto N. SALVADOR, Manuela D. V. LEÃO, Luiz A. W. PEIXOTO, Marina B. MENDONÇA, André L. NETTO-FERREIRA, Fabio R. SILVA, Luciano F. A. MONTAG, Wolmar B. WOSIACKI

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Unexpected species diversity in electric eels with a description of the strongest living bioelectricity generator by C. David de Santana, William G. R. Crampton, Casey B. Dillman, Renata G. Frederico, Mark H. Sabaj, Raphaël Covain, Jonathan Ready, Jansen Zuanon, Renildo R. de Oliveira, Raimundo N. Mendes-Júnior, Douglas A. Bastos, Tulio F. Teixeira, Jan Mol, Willian Ohara, Natália Castro e Castro, Luiz A. Peixoto, Cleusa Nagamachi, Leandro Sousa, Luciano F. A. Montag, Frank Ribeiro, Joseph C. Waddell, Nivaldo M. Piorsky, Richard P. Vari, Wolmar B. Wosiacki

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