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.