S&B Color Enhancing Sticks, with Astaxanthin for bringing out the Red in your Fish Please note: All product photos are not exact, product color and sizes may vary a little Ideal for All Tropical Fish, both Freshwater and Saltwater Fish All Foods are packed in a Bubble Pack or a Hard Box for safe shipping All Aquatic Foods SINKING Bits & Sticks are APX. 1/8" x 3/16" to 3/8" in size. Sizes are not exact. Our Bits & Sticks are compressed & extruded in equal weights from our High Quality Flakes.