Its not a good idea to mix any amphibian species. There are several reasons for this. Cross poisoning, territorial disputes, cross infection, possible predation, & interbreeding to name a few. A lot of people in the dart frog community even frown upon mixing of differnt colour morphs to prevent cross breeding. Unlike snake people, who seem to be always trying to come up with a new designer snakes, dart frog people are purists. They want to keep frogs the same in captivity as they would be found in the wild. So no new man-made colour morphs.

Kurt