I give mine a variety of pellets and wafers.
Here is a list, the first one being the one I give the most :
- HBH Algea Grazers
- Kensfish Premium Vegetable Stick
- NLS Thera A 2mm
- Wardley's Spirulina Discs
- Hikari Algea Wafer (rarely)
I also give them fresh raw veggies (once a week normally):
- Zucchini (their favorite)
- Cucumber (rarely)
- Green pepper (rarely, but they love it)
Normally the day before a water change, it always make a mess in the tank...
I tried brocoli, but it made my water go white !
Here are some pictures taken a few minutes ago with them eating zucchini :