Attractive males are cautious and better learners in the sailfin tetra

Kalebe Pinto, David Saenz, Elio Borghezan & Tiago Pires
A major component of Darwin's formulation of sexual selection theory is whether mate choice can contribute to the evolution of cognitive abilities. Although a correlation between cognition and attractive traits has commonly been reported, the processes that generate such associations remain elusive. Here, we investigated female preference, neophobia and spatial learning in the sailfin tetra, Crenuchus spilurus, a sexually dimorphic fish. Females chose the most ornamented males, which were also more neophobic. This is in...
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