Okay, I'm getting a little confused by all these live food options. I can never figure out what size these guys are! Micro worms, Walter worms, banana worms, vinegar eels, flour beetles, scuds, daphnia, brine shrimp.... What are the sizes of these guys? I'm going to be getting kuhlis, neons and peacock gudgeons, what would be good for them? I know flour beetles and scuds are too big, vinegar eels and daphnia are too small. But I'm not sure on the relative sizes of the others, especially the worms.