I was thinking of ordering some of these online and adding them to my large fish diet. Has anyone ever used these and have thoughts about them? The site I would order from has 100 for $8.19 and suggests keeping them in the fridge and they will last for weeks. I dont mind keeping them in the fridge, but how many weeks do you think they will last? Im thinking it would take me a few months to go through that many worms. They would be fed to my Oscar, Herichthys Carpintis, Andinoacara Stalsbergi, and a Managuense.