What i do is defrosted the whole thing and once its defrosted i count the anchovies, 25-30 anchovies i seperate it wrap it with a surround wrap, wrap it like how you wrap a hard candy, so i keep doing that till the whole styrofoam is empty, then i get a ziplock, i put each 25-30 anchovies that is wrap in the ziplock and freeze it again. So when i need to get some i just need to get one wrap that has 25-30 anchovies and defrosted that without defrosting the whole sytrofoam again. I know 25-30 pieces of anchovies is alot, but then i have 16 bichirs, so if one bichir can eat 2-3 anchovies ill have enough for the rest off them.