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Best Overall: Hikari Sinking Wafers Fish Food
Hikari sinking wafers are well balanced, sink rapidly, and are small enough to be swallowed whole by even smaller fish. They are readily accepted by most fish and will not cloud the water.
Best High-End: Tetre 120 Tab Plecomin Fish Food
Tetra foods are all quite good, and the Tetra Min Tablets are no exception. These wafers sink rapidly and are readily accepted by bottom feeders. They are a bit pricier than other brands but well worth the money
Best Color: Hikari Tropical Sinking Carnivore Pellets
These pellets are specifically formulated for bottom feeding carnivorous fish. They sink rapidly, retain their shape, and contain color enhancing carotenoid.
Best Quick Sink: Ocean Star International Pellets Shrimp Fish Food, 1.6-Ounce
Osi brine shrimp pellets rapidly sink, which is good if you are concerned with getting them to hard to feed bottom dwellers. If you are looking for a product that floats a while before sinking, get the brine shrimp stars. Although they are labeled Marine, they can be used in Freshwater aquariums as well.
Best Nutrient: Pisces Pros (HBH) Variety Bites Hermit Crab Food
Crab & Lobster Bites sink quickly to the bottom of the aquarium to allow the crustacean time to consume the food. Just a few dense, nutrient-rich pellets give crabs and lobsters the balanced nutrition they need.