What are member experiences in feeding the small black worms to a Betta and tropical fish? My pet store said they were good for them and I thought some live food would add a little excitement for my Betta...Needless to say, I've given him 2 (1 per day). He is a ruthless hunter and attacked with lightening speed. I can tell he really liked them but are they good for him? How do I keep them fresh? I've read conflicting opinions on different forums. I don't want to kill my fish giving them something they enjoy. BTW - I dropped one in my fresh tank and the angel sucked it up like spaghetti!