Actually, my neon tetras leave them alone. My molly had given birth about a month ago, and the neons didn't try to eat them. The female molly didn't go after them, and she watched over them like a hawk and chased away the male if he got too close. The only other fish I have in my tank is a cory and an otto. I don't think they would go after them to try to eat them. So, do I have to worry about the danios? I didn't have them with the last batch. There is a new batch coming soon though, and I want them to survive.