Big Fella™ – 3mm slow sinking & dissolving 3mm pellet formulated for large cichlids, silver dollars, angels and other aggressive eaters. A balanced blend of marine proteins and spirulina blue-green algae. Also available with slightly more shrimp proteins for larger marine ­fish. For almost ten years Xtreme has included probiotic packs in all formulas. No hormones. No artificial color enhancers.