Different photosynthetic bacteria also contain different photosynthetic pigments, such as chlorophylls and carotenoids, allowing them to take advantage of different portions of the electromagnetic spectrum and thereby inhabit different niches.
Diversas bacterias fotosintéticas tamén conteñen diversos pigmentos fotosintéticos tales como clorofilas e carotenoides permitindo que se aproveiten diversas porcións do espectro electromagnético e deste modo habiten diversas zonas.