The fish all seem to like this food which is the most important thing. I like the size, good for all my fish. Two things kept it from 5 stars, first, it sinks too fast. My slower feeders don't have time to eat before it's on the tank bottom and they won't go down to eat it. Second (and less important), I don't like the packaging. I have arthritic fingers and find it difficult to seal and unseal. I'll probably move it into a jar with an easy lid.