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Milhomem, S. S. R.; Pieczarka, J. C.; Crampton, W. G. R.; de Souza, A. C. P.; Carvalho Jr, J. R.; Nagamachi, C. Y.

Differences in Karyotype Between Two Sympatric Species of Gymnotus (Gymnotiformes: Gymnotidae) from the Eastern Amazon of Brazil

. Zootaxa 2007, 1397, 55–62.