I highly recommend Che Sushi for delivery (I use them all the time so frequently that I think I keep them in business! ) Their prices are quite decent, too. They have various locations throughout Capital Federal so the wait time is usually pretty fast, and the food is delicious!
There is only one Sushi place that I can recommend TO Japanese serves incredible variety of sushi with tuna . white fish and other delectable varities. They are located on Costa Rica and Arevelo Palermo Hollywood