Favia fragum is a Caribbean coral exhibiting high abundance on shallow reefs and scarcity at depth. Light quality and quantity may contribute to this vertical zonation. We studied the effects of light spectrum and irradiance on recruitment, survival and growth of F. fragum . A larval settlement experiment with four different light treatments (white or blue light, each at 75 or 750 μmol quanta m −2 s −1 ) was performed for a 5-...