Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The fish love them

These are the only wafers I've ever tried that don't foul the water and filters. I bought them for fiddler crabs in a brackish tank. They'll occasionally drag pieces up on the "beach" to eat, but most often just pounce on the chunks under water. The crabs shed regularly as they grow on these wafers. As an added plus, all of my tropical fish like them too.