So I bought some neon tetras yesterday and they've been in with my beta since without problems (phew). But I'm just wondering, they won't come to the top and eat. They're staying swimming at the bottom and middle. Is this just because they're new and still nervous or maybe they can't see the food? I've also bought a feeding ring but haven't used it yet but once they eat I will. Also, I know betas can be left a few days without food but how about Neon Tetras? Can they go say 2 to 4 days without food? And if you have anything else to throw out feel free, I've done a bunch of research but any other tips are appreciated!