The frogs get pellets one day a week, usually on Monday, but this week on Wednesday. It's not their favorite food, but they eat it.
Some of the frogs have figured out that the food always comes from the top of the tank, so they swim up and surface feed. The rest of the frogs (especially the gravid females, who have to work harder to surface) feed in the more traditional ADF manner by waiting until the food falls to the bottom and then sniffing it out. They don't see very well, so they find their food mainly by scent.