If the tank well ventilated? Because you will need good ventilation you go after Amazon milks. Not to mention plenty of places to climb.

With darts the water cannot be too deep, as they are not skilled swimmers. They do well in a tank with high humidty and their need for ventilation is not as great as that of treefrogs.

Milks can eat crickets and other similarly sized feeder insects. Darts eat smaller insects like friut flies which you will have to culture yourself.

Darts can be territorial, treefrogs rarely are.

That being said, I love them all.