Oh yeah, they were begging for food within 5 hours of being put in the tank! They are doing suprisingly well. I was expecting them to be freaked out and cowering in a corner for at least the first few days, but no such thing has happened. They are all swimming out in the open and doing the begging dance every time someone walks by. They have an endless appetite it seems, even at feeding them 3-5 times a day, which I guess is a good thing!