On animal coloration, sexual selection may promote conspicuousness while natural selection may favor crypsis. We will test the hypothesis that this conflict between evolutionary pressures drives the coloration of Gonatodes caudiscutatus, a species of small gecko occurring in coastal Ecuador and the Galapagos islands. We hypothesize that along its distribution, G. caudiscutatus will be submitted to different levels of predation pressure and its levels of conspicuity will vary accordingly.