I just finished doing a fish swap in two tanks. My Xiphophorus evelynae population is growing bigger and bigger while my wild guppies from Barbados are taking their time to reproduce at this moment. So, I've moved my Xiphophorus evelynae to the tank of those wild guppies and those wild guppies moved to the tank of the Xiphophorus evelynae. For your information: Xiphophorus evelynae is a wild platy species.