don't think danios are far behind, although they have of what food is whos, they don't hesitate to pig out. I pull water samples for testing and they think I'm feeding them. Heck they pig out so much Thor (my snail) has to sit ON the wafer in order to get anything, otherwise the danios and guppys are all over it. I have noticed that a certian danio (Zuess) has gotten noticibly bigger in the past week or so. I think I need to head on down and get some lettuce for my snail. Of course the guppies will be all over it.