I am a doctoral student interested in animal behavior and evolution. I have been investigating mate choice and divergence in secondary sexually-selected traits, particularly how they may affect mating partner recognition in an Amazon fish. Amazon has the highest freshwater faunal biodiversity in the world, and now I am trying to answer the following question: why does the Amazon have such high biodiversity? I am focused on how divergent selection can shape biodiversity in Amazonian rivers and how environment quality (different types of water) affects visual communication, especially sexual communication.