I have 14 ember tetras and I feed them a small amount of food three times a day. Today I finally went and defrosted some blood worms for them. They didn't need a full cube so I cut part of the cube, thawed it in some tank water for 10 minutes and then fed the worms to my excited tetras for the last meal of the day. Having gone through the process now, it would definitely be easier if I could just thaw a whole cube and then leave whatever thawed bloodworms I don't use in a container in my freezer. However, I am unsure if this would be safe for my fish so I wanted to get some input before trying this. Thanks in advance for any advice!