Some years ago, we had a paludarium. If the tank is large enuf, yes, it's very possible to keep darts n fish together. If it's done right, it can be a fabulous show piece. We had neons, guppies, the usual suspects, along with green/black auratus....
The tank is now a 'swamp' for my blue/bronze auratus babies. No moving water, no filtration, about 50/50 land/water with lots of detritus in the water. The tadpoles take care of themselves and the resulting froglets are healthy and robust.
You might want to google paludarium and check out the setups. Usually, the land portion is substantial enuf to support the darts, plus all the plants that are added make them so very nice.
kristi