My own largest darts are the D. azureus mated pair I keep separately in a 30 gallon vivarium. I would not mix any of my darts with any other genus, because I don't know enough about either to do this, yet. I've had only 6 years experience with darts kept separately per specie, and sometimes separately per sexed pairs, such as the azureus and pumilio that are particularly territorial and do better in a paired off situation. I have no experience with red-eyed tree frogs, although they are attractive enough (albeit nocturnal and less interesting to me,) but I wouldn't mix them with darts, at least until I had full personal experience with each. The mixes you see and hear about that are most successful are from zoos, which have vast resources, of habitat, experienced personnel, and can cover their mistakes on display with a back-up from the back rooms in a crunch. Very experienced hobbyists, with large facilities-- not our usual 20 to 55 gallon tank vivariums as beginners, can sometimes emulate this successfully. My point is: A rank beginner in the hobby can't do this just upon the advice of those who have succeesed after years of experience. There is a certain kind of "fine-tuning" that goes on between mixing after years of experience and dumping the same things together as a novice.
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Patty
Pahsimeroi, Idaho
4 D. auratus blue
5 D. galactonotus pumpkin orange splash back
5 D. imitator
6 D. leucomelas
4 D. pumilio Bastimentos
4 D. fantasticus
4 P. terribilis
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus